WITTER DEAN NATURAL RESOURCE DEVELOPMENT SECURITIES INC
485BPOS, 1997-07-18
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<PAGE>
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JULY 18, 1997
 
                                                     REGISTRATION NOS.:  2-70421
                                                                        811-3129
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                ----------------
 
                                   FORM N-1A
                             REGISTRATION STATEMENT
                       UNDER THE SECURITIES ACT OF 1933                      /X/
                         PRE-EFFECTIVE AMENDMENT NO.                         / /
                       POST-EFFECTIVE AMENDMENT NO. 21                       /X/
                                     AND/OR
              REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY
                                 ACT OF 1940                                 /X/
                               AMENDMENT NO. 22                              /X/
                              -------------------
 
                    DEAN WITTER NATURAL RESOURCE DEVELOPMENT
                                SECURITIES INC.
               (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER)
 
                             TWO WORLD TRADE CENTER
                            NEW YORK, NEW YORK 10048
                    (ADDRESS OF PRINCIPAL EXECUTIVE OFFICE)
 
       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (212) 392-1600
 
                                BARRY FINK, ESQ.
                             TWO WORLD TRADE CENTER
                            NEW YORK, NEW YORK 10048
                    (NAME AND ADDRESS OF AGENT FOR SERVICE)
 
                                    COPY TO:
                            DAVID M. BUTOWSKY, ESQ.
                             GORDON ALTMAN BUTOWSKY
                             WEITZEN SHALOV & WEIN
                              114 WEST 47TH STREET
                            NEW YORK, NEW YORK 10036
                                ----------------
 
                 APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:
 As soon as practicable after this Post-Effective Amendment becomes effective.
 
 IT IS PROPOSED THAT THIS FILING WILL BECOME EFFECTIVE (CHECK APPROPRIATE BOX)
        _____ immediately upon filing pursuant to paragraph (b)
        _X_ on July 28, 1997 pursuant to paragraph (b)
        ___ 60 days after filing pursuant to paragraph (a)
        ___ on (date) pursuant to paragraph (a) of rule 485.
 
    THE REGISTRANT HAS REGISTERED AN INDEFINITE NUMBER OF ITS SHARES UNDER THE
SECURITIES ACT OF 1933 PURSUANT TO SECTION (a) (1) OF RULE 24f-2 UNDER THE
INVESTMENT COMPANY ACT OF 1940. THE REGISTRANT HAS FILED THE RULE 24f-2 NOTICE,
FOR ITS FISCAL YEAR ENDED FEBRUARY 28, 1997, WITH THE SECURITIES AND EXCHANGE
COMMISSION ON APRIL 3, 1997.
 
                            AMENDING THE PROSPECTUS
 
            -------------------------------------------------------
            -------------------------------------------------------
<PAGE>
            DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
 
                             CROSS-REFERENCE SHEET
 
                                   FORM N-1A
 
<TABLE>
<S>                                             <C>
ITEM                                                                           CAPTION
- ----------------------------------------------  ---------------------------------------------------------------------
PART A                                                                       PROSPECTUS
 1.  .........................................  Cover Page
 2.  .........................................  Prospectus Summary; Summary of Fund Expenses
 3.  .........................................  Financial Highlights; Performance Information
 4.  .........................................  Investment Objective and Policies; The Fund and its Management; Cover
                                                 Page; Investment Restrictions; Prospectus Summary
 5.  .........................................  The Fund and Its Management; Back Cover; Investment Objective and
                                                 Policies
 6.  .........................................  Dividends, Distributions and Taxes; Additional Information
 7.  .........................................  Purchase of Fund Shares; Shareholder Services; Redemptions and
                                                 Repurchases
 8.  .........................................  Purchase of Fund Shares; Redemptions and Repurchases; Shareholder
                                                 Services
 9.  .........................................  Not Applicable
 
PART B                                                           STATEMENT OF ADDITIONAL INFORMATION
10.  .........................................  Cover Page
11.  .........................................  Table of Contents
12.  .........................................  The Fund and Its Management
13.  .........................................  Investment Practices and Policies; Investment Restrictions; Portfolio
                                                 Transactions and Brokerage
14.  .........................................  The Fund and Its Management; Directors and Officers
15.  .........................................  Directors and Officers
16.  .........................................  The Fund and Its Management; Custodian and Transfer Agent;
                                                 Independent Accountants
17.  .........................................  Portfolio Transactions and Brokerage
18.  .........................................  Shares of the Fund
19.  .........................................  Purchase of Fund Shares; Redemptions and Repurchases; Financial
                                                 Statements; Determination of Net Asset Value; Shareholder Services
20.  .........................................  Dividends, Distributions and Taxes
21.  .........................................  The Distributor; Purchase of Fund Shares
22.  .........................................  Performance Information
23.  .........................................  Experts
</TABLE>
 
PART C
 
    Information required to be included in Part C is set forth under the
appropriate item, so numbered, in Part C of this Registration Statement.
<PAGE>
 
   
<TABLE>
<S>                                             <C>
              PROSPECTUS                        TABLE OF CONTENTS
              JULY 28, 1997                     Prospectus Summary/2
              Dean Witter Natural Resource      Summary of Fund Expenses/4
Development Securities Inc. (the "Fund") is an  Financial Highlights/6
open-end, diversified management investment     The Fund and its Management/7
company whose investment objective is capital   Investment Objective and Policies/7
growth. The Fund invests primarily in common    Risk Considerations and Investment Practices/8
stock of companies in the natural resources     Investment Restrictions/12
and related areas, including companies engaged  Purchase of Fund Shares/13
in the exploration for and development,         Shareholder Services/23
production and distribution of natural          Redemptions and Repurchases/26
resources or in the development of              Dividends, Distributions and Taxes/27
energy-efficient technologies or other natural  Performance Information/28
resource related supplies or products. (See     Additional Information/29
"Investment Objective and Policies.")           SHARES OF THE FUND ARE NOT DEPOSITS OR
               The Fund offers four classes of  OBLIGATIONS OF, OR GUARANTEED OR ENDORSED BY,
shares (each, a "Class"), each with a           ANY BANK, AND THE SHARES ARE NOT FEDERALLY
different combination of sales charges,         INSURED BY THE FEDERAL DEPOSIT INSURANCE
ongoing fees and other features. The different  CORPORATION, THE FEDERAL RESERVE BOARD, OR ANY
distribution arrangements permit an investor    OTHER AGENCY.
to choose the method of purchasing shares that  THESE SECURITIES HAVE NOT BEEN APPROVED OR
the investor believes is most beneficial given  DISAPPROVED BY THE SECURITIES AND EXCHANGE
the amount of the purchase, the length of time  COMMISSION OR ANY STATE SECURITIES COMMISSION
the investor expects to hold the shares and     NOR HAS THE SECURITIES AND EXCHANGE COMMISSION
other relevant circumstances. Except as         OR ANY STATE SECURITIES COMMISSION PASSED UPON
discussed herein, shares of the Fund held       THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.
prior to July 28, 1997 have been designated     ANY REPRESENTATION TO THE CONTRARY IS A
Class B shares. (See "Purchase of Fund          CRIMINAL OFFENSE.
Shares--Alternative Purchase Arrangements.")    Dean Witter
               This Prospectus sets forth       Natural Resource Development
concisely the information you should know       Securities Inc.
before investing in the Fund. It should be      Two World Trade Center
read and retained for future reference.         New York, New York 10048
Additional information about the Fund is        (212) 392-2550 or
contained in the Statement of Additional        (800) 869-NEWS (toll-free)
Information, dated July 28, 1997, which has
been filed with the Securities and Exchange
Commission, and which is available at no
charge upon request of the Fund at the address
or telephone numbers listed on this page. The
Statement of Additional Information is
incorporated herein by reference.
    DEAN WITTER DISTRIBUTORS INC.
    DISTRIBUTOR
</TABLE>
    
<PAGE>
 
   
<TABLE>
<S>                  <C>
PROSPECTUS SUMMARY
The                  The Fund, a Maryland corporation, is an open-end, diversified management
Fund                 investment company investing primarily in common stock of companies in the
                     natural resources and related areas.
Shares Offered       Common Stock with $0.01 par value (see page 29). The Fund offers four Classes of
                     shares, each with a different combination of sales charges, ongoing fees and
                     other features (see pages 13-23).
Minimum Purchase     The minimum initial investment for each Class is $1,000; ($100 if the account is
                     opened through EasyInvest -SM-). Class D shares are only available to persons
                     investing $5 million or more and to certain other limited categories of
                     investors. For the purpose of meeting the minimum $5 million investment for
                     Class D shares, and subject to the $1,000 minimum initial investment for each
                     Class of the Fund, an investor's existing holdings of Class A shares and shares
                     of funds for which Dean Witter InterCapital Inc. serves as investment manager
                     ("Dean Witter Funds") that are sold with a front-end sales charge, and
                     concurrent investments in Class D shares of the Fund and other Dean Witter Funds
                     that are multiple class funds, will be aggregated. The minimum subsequent
                     investment is $100 (see page 13).
Investment           The investment objective of the Fund is capital growth.
Objective
Investment           Dean Witter InterCapital Inc. ("InterCapital"), the Investment Manager of the
Manager              Fund, and its wholly-owned subsidiary, Dean Witter Services Company Inc., serve
                     in various investment management, advisory, management and administrative
                     capacities to 100 investment companies and other portfolios with assets of
                     approximately $96.6 billion at June 30, 1997 (see page 7).
Management           The Investment Manager receives a monthly fee at an annual rate of 0.625 of 1%
Fee                  of daily net assets up to $250 million and 0.50 of 1% of daily net assets over
                     $250 million (see page 7).
Distributor          Dean Witter Distributors Inc. (the "Distributor"). The Fund has adopted a
and                  distribution plan pursuant to Rule 12b-1 under the Investment Company Act (the
Distribution         "12b-1 Plan") with respect to the distribution fees paid by the Class A, Class B
Fee                  and Class C shares of the Fund to the Distributor. The entire 12b-1 fee payable
                     by Class A and a portion of the 12b-1 fee payable by each of Class B and Class C
                     equal to 0.25% of the average daily net assets of the Class are currently each
                     characterized as a service fee within the meaning of the National Association of
                     Securities Dealers, Inc. guidelines. The remaining portion of the 12b-1 fee, if
                     any, is characterized as an asset-based sales charge (see pages 13 and 21).
Alternative          Four classes of shares are offered:
Purchase
Arrangements         - Class A shares are offered with a front-end sales charge, starting at 5.25%
                     and reduced for larger purchases. Investments of $1 million or more (and
                     investments by certain other limited categories of investors) are not subject to
                     any sales charge at the time of purchase but a contingent deferred sales charge
                     ("CDSC") of 1.0% may be imposed on redemptions within one year of purchase. The
                     Fund is authorized to reimburse the Distributor for specific expenses incurred
                     in promoting the distribution of the Fund's Class A shares and servicing
                     shareholder accounts pursuant to the Fund's 12b-1 Plan. Reimbursement may in no
                     event exceed an amount equal to payments at an annual rate of 0.25% of average
                     daily net assets of the Class (see pages 13, 16 and 21).
                     - Class B shares are offered without a front-end sales charge, but will in most
                     cases be subject to a CDSC (scaled down from 5.0% to 1.0%) if redeemed within
                     six years after purchase. The CDSC will be imposed on any redemption of shares
                     if after such redemption the aggregate current value of a Class B account with
                     the Fund falls below the aggregate amount of the investor's purchase payments
                     made during the six years preceding the redemption. A different CDSC schedule
                     applies to investments by certain
</TABLE>
    
 
                                       2
<PAGE>
   
<TABLE>
<S>                  <C>
                     qualified plans. Class B shares are also subject to a 12b-1 fee assessed at the
                     annual rate of 1.0% of the lesser of: (a) the average daily net sales of the
                     Fund's Class B shares since the inception of the 12b-1 Plan on July 2, 1984 or
                     (b) the average daily net assets of Class B attributable to shares issued since
                     the inception of the 12b-1 Plan. All shares of the Fund held prior to July 28,
                     1997, other than shares which were purchased prior to July 2, 1984 (and, with
                     respect to such shares, certain shares acquired through reinvestment of
                     dividends and capital gains distributions), have been designated Class B shares.
                     Shares which were purchased prior to July 2, 1984 (and, with respect to such
                     shares, certain shares acquired through reinvestment of dividends and capital
                     gains distributions) have been designated Class D shares. Shares held before May
                     1, 1997 that have been designated Class B shares will convert to Class A shares
                     in May, 2007. In all other instances, Class B shares convert to Class A shares
                     approximately ten years after the date of the original purchase (see pages 13,
                     18 and 21).
                     - Class C shares are offered without a front-end sales charge, but will in most
                     cases be subject to a CDSC of 1.0% if redeemed within one year after purchase.
                     The Fund is authorized to reimburse the Distributor for specific expenses
                     incurred in promoting the distribution of the Fund's Class C shares and
                     servicing shareholder accounts pursuant to the Fund's 12b-1 Plan. Reimbursement
                     may in no event exceed an amount equal to payments at an annual rate of 1.0% of
                     average daily net assets of the Class (see pages 13 and 21).
                     - Class D shares are offered only to investors meeting an initial investment
                     minimum of $5 million and to certain other limited categories of investors.
                     Class D shares are offered without a front-end sales charge or CDSC and are not
                     subject to any 12b-1 fee (see pages 13 and 21).
Dividends and        Dividends from net investment income and distributions from net capital gains,
Capital Gains        if any, are paid at least once each year. The Fund may, however, determine to
Distributions        retain all or part of any net long-term capital gains in any year for
                     reinvestment. Dividends and capital gains distributions paid on shares of a
                     Class are automatically reinvested in additional shares of the same Class at net
                     asset value unless the shareholder elects to receive cash. Shares acquired by
                     dividend and distribution reinvestment will not be subject to any sales charge
                     or CDSC (see pages 23 and 27).
Redemption           Shares are redeemable by the shareholder at net asset value less any applicable
                     CDSC on Class A, Class B or Class C shares. An account may be involuntarily
                     redeemed if the total value of the account is less than $100, or, if the account
                     was opened through EasyInvest -SM-, if after twelve months the shareholder has
                     invested less than $1,000 in the account (see page 26).
Risks                The net asset value of the Fund's shares will fluctuate with changes in market
                     value of portfolio securities. Emphasis on natural resources may result in
                     exposure of some companies to foreign political and currency risks and
                     substantial price fluctuations (see page 8). Investors should review the
                     investment objective and policies of the Fund carefully and consider their
                     ability to assume the risks involved in purchasing shares of the Fund (see pages
                     8 through 11). The Fund may also invest in futures and options which may be
                     considered speculative in nature and may involve greater risks than those
                     customarily assumed by other investment companies which do not invest in such
                     instruments (see page 10). In addition, the investor is directed to the
                     discussions of foreign securities on page 8.
       THE ABOVE IS QUALIFIED IN ITS ENTIRETY BY THE DETAILED INFORMATION APPEARING ELSEWHERE
                  IN THE PROSPECTUS AND IN THE STATEMENT OF ADDITIONAL INFORMATION.
</TABLE>
    
 
                                       3
<PAGE>
SUMMARY OF FUND EXPENSES
- --------------------------------------------------------------------------------
 
   
    The following table illustrates all expenses and fees that a shareholder of
the Fund will incur. The expenses and fees set forth in the table are based on
the expenses and fees for the fiscal year ended February 28, 1997.
    
 
   
<TABLE>
<CAPTION>
                                                                       CLASS A      CLASS B      CLASS C      CLASS D
                                                                     -----------  -----------  -----------  -----------
<S>                                                                  <C>          <C>          <C>          <C>
SHAREHOLDER TRANSACTION EXPENSES
- -------------------------------------------------------------------
Maximum Sales Charge Imposed on Purchases (as a percentage of
  offering price)..................................................        5.25%(1)       None       None         None
Sales Charge Imposed on Dividend Reinvestments.....................        None         None         None         None
Maximum Contingent Deferred Sales Charge (as a percentage of
  original purchase price or redemption proceeds)..................        None(2)       5.00%(3)       1.00%(4)       None
Redemption Fees....................................................        None         None         None         None
Exchange Fee.......................................................        None         None         None         None
 
ANNUAL FUND OPERATING EXPENSES (AS A PERCENTAGE OF AVERAGE NET
  ASSETS)
- -------------------------------------------------------------------
Management Fees....................................................        0.62%        0.62%        0.62%        0.62%
12b-1 Fees (5) (6).................................................        0.25%        1.00%(7)       1.00%       None
Other Expenses.....................................................        0.24%        0.24%        0.24%        0.24%
Total Fund Operating Expenses (8)..................................        1.11%        1.86%        1.86%        0.86%
</TABLE>
    
 
- ------------
   
(1) REDUCED FOR PURCHASES OF $25,000 AND OVER (SEE "PURCHASE OF FUND
    SHARES--INITIAL SALES CHARGE ALTERNATIVE--CLASS A SHARES").
    
   
(2) INVESTMENTS THAT ARE NOT SUBJECT TO ANY SALES CHARGE AT THE TIME OF PURCHASE
    ARE SUBJECT TO A CDSC OF 1.00% THAT WILL BE IMPOSED ON REDEMPTIONS MADE
    WITHIN ONE YEAR AFTER PURCHASE, EXCEPT FOR CERTAIN SPECIFIC CIRCUMSTANCES
    (SEE "PURCHASE OF FUND SHARES--INITIAL SALES CHARGE ALTERNATIVE--CLASS A
    SHARES").
    
   
(3) THE CDSC IS SCALED DOWN TO 1.00% DURING THE SIXTH YEAR, REACHING ZERO
    THEREAFTER.
    
   
(4) ONLY APPLICABLE TO REDEMPTIONS MADE WITHIN ONE YEAR AFTER PURCHASE (SEE
    "PURCHASE OF FUND SHARES-- LEVEL LOAD ALTERNATIVE--CLASS C SHARES").
    
   
(5) THE 12B-1 FEE IS ACCRUED DAILY AND PAYABLE MONTHLY. THE ENTIRE 12B-1 FEE
    PAYABLE BY CLASS A AND A PORTION OF THE 12B-1 FEE PAYABLE BY EACH OF CLASS B
    AND CLASS C EQUAL TO 0.25% OF THE AVERAGE DAILY NET ASSETS OF THE CLASS ARE
    CURRENTLY EACH CHARACTERIZED AS A SERVICE FEE WITHIN THE MEANING OF NATIONAL
    ASSOCIATION OF SECURITIES DEALERS, INC. ("NASD") GUIDELINES AND ARE PAYMENTS
    MADE FOR PERSONAL SERVICE AND/OR MAINTENANCE OF SHAREHOLDER ACCOUNTS. THE
    REMAINDER OF THE 12B-1 FEE, IF ANY, IS AN ASSET-BASED SALES CHARGE, AND IS A
    DISTRIBUTION FEE PAID TO THE DISTRIBUTOR TO COMPENSATE IT FOR THE SERVICES
    PROVIDED AND THE EXPENSES BORNE BY THE DISTRIBUTOR AND OTHERS IN THE
    DISTRIBUTION OF THE FUND'S SHARES (SEE "PURCHASE OF FUND SHARES--PLAN OF
    DISTRIBUTION").
    
   
(6) UPON CONVERSION OF CLASS B SHARES TO CLASS A SHARES, SUCH SHARES WILL BE
    SUBJECT TO THE LOWER 12B-1 FEE APPLICABLE TO CLASS A SHARES. NO SALES CHARGE
    IS IMPOSED AT THE TIME OF CONVERSION OF CLASS B SHARES TO CLASS A SHARES.
    CLASS C SHARES DO NOT HAVE A CONVERSION FEATURE AND, THEREFORE, ARE SUBJECT
    TO AN ONGOING 1.00% DISTRIBUTION FEE (SEE "PURCHASE OF FUND
    SHARES--ALTERNATIVE PURCHASE ARRANGEMENTS").
    
   
(7) THE 12B-1 FEE HAS BEEN RESTATED TO REFLECT WHAT THE FEE WOULD HAVE BEEN IF
    THE SHARES THAT HAVE BEEN DESIGNATED CLASS D SHARES WERE NOT INCLUDED IN THE
    FUND AS OF FEBRUARY 28, 1997. THE ACTUAL 12B-1 FEE WAS 0.98%.
    
   
(8) THERE WERE NO OUTSTANDING SHARES OF CLASS A, CLASS C OR CLASS D PRIOR TO THE
    DATE OF THIS PROSPECTUS. ACCORDINGLY, "TOTAL FUND OPERATING EXPENSES," AS
    SHOWN ABOVE WITH RESPECT TO THOSE CLASSES, ARE BASED UPON THE SUM OF 12B-1
    FEES, MANAGEMENT FEES AND ESTIMATED "OTHER EXPENSES."
    
 
                                       4
<PAGE>
- --------------------------------------------------------------------------------
   
<TABLE>
<CAPTION>
EXAMPLES                                                                              1 YEAR       3 YEARS      5 YEARS
- ----------------------------------------------------------------------------------  -----------  -----------  -----------
<S>                                                                                 <C>          <C>          <C>
You would pay the following expenses on a $1,000 investment assuming (1) a 5%
annual return and (2) redemption at the end of each time period:
    Class A.......................................................................   $      63    $      86    $     110
    Class B.......................................................................   $      69    $      88    $     121
    Class C.......................................................................   $      29    $      58    $     101
    Class D.......................................................................   $       9    $      27    $      48
 
You would pay the following expenses on the same $1,000 investment assuming no
redemption at the end of the period:
    Class A.......................................................................   $      63    $      86    $     110
    Class B.......................................................................   $      19    $      58    $     101
    Class C.......................................................................   $      19    $      58    $     101
    Class D.......................................................................   $       9    $      27    $      48
 
<CAPTION>
EXAMPLES                                                                             10 YEARS
- ----------------------------------------------------------------------------------  -----------
<S>                                                                                 <C>
You would pay the following expenses on a $1,000 investment assuming (1) a 5%
annual return and (2) redemption at the end of each time period:
    Class A.......................................................................   $     181
    Class B.......................................................................   $     218
    Class C.......................................................................   $     218
    Class D.......................................................................   $     106
You would pay the following expenses on the same $1,000 investment assuming no
redemption at the end of the period:
    Class A.......................................................................   $     181
    Class B.......................................................................   $     218
    Class C.......................................................................   $     218
    Class D.......................................................................   $     106
</TABLE>
    
 
   
    THE ABOVE EXAMPLES SHOULD NOT BE CONSIDERED A REPRESENTATION OF PAST OR
FUTURE EXPENSES OR PERFORMANCE. ACTUAL EXPENSES OF EACH CLASS MAY BE GREATER OR
LESS THAN THOSE SHOWN.
    
 
   
    The purpose of this table is to assist the investor in understanding the
various costs and expenses that an investor in the Fund will bear directly or
indirectly. For a more complete description of these costs and expenses, see "
The Fund and its Management," "Purchase of Fund Shares--Plan of Distribution"
and "Redemptions and Repurchases."
    
 
   
    Long-term shareholders of Class B and Class C may pay more in sales charges,
including distribution fees, than the economic equivalent of the maximum
front-end sales charges permitted by the NASD.
    
 
                                       5
<PAGE>
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
 
   
    The following ratios and per share data for a share of capital stock
outstanding throughout each period have been audited by Price Waterhouse LLP,
independent accountants. The financial highlights should be read in conjunction
with the financial statements, notes thereto, and the unqualified report of
independent accountants which are contained in the Statement of Additional
Information. Further information about the performance of the Fund is contained
in the Fund's Annual Report to Shareholders, which may be obtained without
charge upon request to the Fund. All shares of the Fund held prior to July 28,
1997, other than shares which were purchased prior to July 2, 1984 (and, with
respect to such shares, certain shares acquired through reinvestment of
dividends and capital gains distributions), have been designated Class B shares.
Shares which were purchased prior to July 2, 1984 (and, with respect to such
shares, certain shares acquired through reinvestment of dividends and capital
gains distributions) have been designated Class D shares.
    
 
<TABLE>
<CAPTION>
                                               FOR THE YEAR ENDED FEBRUARY 28
                  ----------------------------------------------------------------------------------------
                   1997     1996*    1995     1994     1993     1992*    1991     1990     1989     1988*
- ----------------------------------------------------------------------------------------------------------
<S>               <C>      <C>      <C>      <C>      <C>      <C>      <C>      <C>      <C>      <C>
PER SHARE OPERATING
 PERFORMANCE:
Net asset value,
 beginning of
 period.......... $ 12.70  $ 10.77  $ 11.82  $ 11.36  $ 10.20  $ 11.03  $ 11.33  $  9.93  $  9.46  $  9.10
                  -------  -------  -------  -------  -------  -------  -------  -------  -------  -------
Net investment
 income..........   --        0.06     0.09     0.09     0.16     0.20     0.25     0.30     0.23     0.20
Net realized and
 unrealized gain
 (loss)..........    2.66     2.53    (0.24)    1.25     1.18    (0.44)    0.02     1.80     0.72     0.44
                  -------  -------  -------  -------  -------  -------  -------  -------  -------  -------
Total from
 investment
 operations......    2.66     2.59    (0.15)    1.34     1.34    (0.24)    0.27     2.10     0.95     0.64
                  -------  -------  -------  -------  -------  -------  -------  -------  -------  -------
Less dividends
 and
 distributions
 from:
  Net investment
   income........   (0.02)   (0.04)   (0.12)   (0.09)   (0.18)   (0.20)   (0.28)   (0.32)   (0.21)   (0.28)
  Net realized
   gain..........   (2.00)   (0.62)   (0.78)   (0.79)   --       (0.39)   (0.29)   (0.38)   (0.27)   --
                  -------  -------  -------  -------  -------  -------  -------  -------  -------  -------
Total dividends
 and
 distributions...   (2.02)   (0.66)   (0.90)   (0.88)   (0.18)   (0.59)   (0.57)   (0.70)   (0.48)   (0.28)
                  -------  -------  -------  -------  -------  -------  -------  -------  -------  -------
Net asset value,
 end of period... $ 13.34  $ 12.70  $ 10.77  $ 11.82  $ 11.36  $ 10.20  $ 11.03  $ 11.33  $  9.93  $  9.46
                  -------  -------  -------  -------  -------  -------  -------  -------  -------  -------
                  -------  -------  -------  -------  -------  -------  -------  -------  -------  -------
TOTAL INVESTMENT
 RETURN+.........   20.88%   24.32%   (1.26)%   12.16%   13.31%   (1.91)%    2.87%   21.11%   10.29%    7.32%
RATIOS TO AVERAGE
 NET ASSETS:
Expenses.........    1.84%    1.90%    1.90%    1.91%    1.96%    1.93%    1.80%    1.81%    1.92%    1.81%
Net investment
 income..........    0.05%    0.52%    0.77%    0.73%    1.46%    1.67%    2.28%    2.57%    2.09%    2.14%
SUPPLEMENTAL DATA:
Net assets, end
 of period, in
 thousands....... $247,989 $152,661 $132,812 $139,459 $118,496 $113,145 $150,636 $154,741 $136,911 $171,725
Portfolio
 turnover rate...     156%      49%      59%      69%      52%      31%      29%      22%       7%      26%
Average
 commission rate
 paid............ $0.0534    --       --       --       --       --       --       --       --       --
</TABLE>
 
<TABLE>
<C>  <S>
<FN>
 
- ---------------------
 * Year ended February 29.
 + Does not reflect the deduction of sales charge. Calculated based on the net
asset value as of the last business day of the period.
</TABLE>
 
                                       6
<PAGE>
THE FUND AND ITS MANAGEMENT
- --------------------------------------------------------------------------------
 
    Dean Witter Natural Resource Development Securities Inc. (the "Fund") is an
open-end, diversified management investment company incorporated in Maryland on
December 22, 1980.
 
   
    Dean Witter InterCapital Inc. ("InterCapital" or the "Investment Manager"),
whose address is Two World Trade Center, New York, New York 10048, is the Fund's
investment manager. The Investment Manager, which was incorporated in July,
1992, is a wholly-owned subsidiary of Morgan Stanley, Dean Witter, Discover &
Co., preeminent global financial services firm that maintains leading market
positions in each of its three primary businesses--securities, asset management
and credit services.
    
 
   
    InterCapital and its wholly-owned subsidiary, Dean Witter Services Company
Inc., serve in various investment management, advisory, management and
administrative capacities to 100 investment companies, thirty of which are
listed on the New York Stock Exchange, with combined total assets of
approximately $93.1 billion as of June 30, 1997. The Investment Manager also
manages and advises portfolios of pension plans, other institutions and
individuals which aggregated approximately $3.5 billion at such date.
    
 
    The Fund has retained the Investment Manager to provide administrative
services, manage its business affairs and manage the investment of the Fund's
assets, including the placing of orders for the purchase and sale of portfolio
securities. InterCapital has retained Dean Witter Services Company Inc. to
perform the aforementioned administrative services to the Fund.
 
    The Fund's Board of Directors reviews the various services provided by the
Investment Manager to ensure that the Fund's general investment policies and
programs are being properly carried out and that administrative services are
being provided to the Fund in a satisfactory manner.
 
    As full compensation for the services and facilities furnished to the Fund
and for expenses of the Fund assumed by the Investment Manager, the Fund pays
the Investment Manager monthly compensation calculated daily by applying the
following annual rates to the net assets of the Fund determined as of the close
of each business day: 0.625% of the portion of the daily net assets not
exceeding $250 million and 0.50% of the portion of the daily net assets
exceeding $250 million. For the fiscal year ended February 28, 1997, the Fund
accrued total compensation to the Investment Manager amounting to 0.62% of the
Fund's average daily net assets and the Fund's total expenses amounted to 1.84%
of the Fund's average daily net assets.
 
INVESTMENT OBJECTIVE AND POLICIES
- --------------------------------------------------------------------------------
 
    The investment objective of the Fund is capital growth. There is no
assurance that the objective will be achieved. This objective is fundamental and
may not be changed without the approval of the stockholders of the Fund. The
Fund will invest primarily in common stock of companies in the natural resources
and related areas, and will invest at least 65% of its net assets at all times,
except for temporary and defensive purposes, in the securities of companies
engaged in these areas. A portfolio company is considered to be so engaged when
at least 50% of its assets and/or revenues are currently the result of ownership
or development of assets in such areas. Such companies include those engaged in
the exploration for and development, production and distribution of natural
resources, in the development of energy-efficient technologies or in other
natural resource related supplies or services.
 
    The Fund will seek capital growth by investing in securities of issuers
believed to be responsive to domestic and world demand for natural resources. As
a result of the challenges presented by natural resource needs, the Fund
believes that opportunities for growth can be found in securities of issuers
 
                                       7
<PAGE>
which: (1) own or process natural resources, such as precious metals, other
minerals, water, timberland and forest products; (2) own or produce sources of
energy such as oil, natural gas, coal, uranium, geothermal, oil shale and
biomass; (3) participate in the exploration for and development of natural
resources supplies from new and conventional sources; (4) own or control oil,
gas, or other mineral leases (which may not produce recoverable energy or
resources), rights or royalty interests; (5) provide natural resources
transportation, distribution or processing services, such as refining and
pipeline services; (6) provide related services or supplies, such as drilling,
well servicing, chemicals, parts and equipment; and (7) contribute energy-
efficient technologies, such as systems for energy conversion, conservation and
pollution control. Emphasis on natural resources may result in exposure of some
portfolio companies to foreign political and currency risks and substantial
price fluctuations.
 
    The Fund may purchase securities on a when issued or delayed delivery basis,
may purchase or sell securities on a forward commitment basis and may purchase
securities on a "when, as and if issued" basis, may enter into repurchase
agreements and may invest in options and futures transactions all as described
below.
 
RISK CONSIDERATIONS AND INVESTMENT PRACTICES
 
    FOREIGN SECURITIES.  Foreign securities investments may be affected by
changes in currency rates or exchange control regulations, changes in
governmental administration or economic or monetary policy (in the United States
and abroad) or changed circumstances in dealings between nations. Fluctuations
in the relative rates of exchange between the currencies of different nations
will affect the value of the Fund's investments denominated in foreign currency.
Changes in foreign currency exchange rates relative to the U.S. dollar will
affect the U.S. dollar value of the Fund's assets denominated in that currency
and thereby impact upon the Fund's total return on such assets.
 
    Foreign currency exchange rates are determined by forces of supply and
demand on the foreign exchange markets. These forces are themselves affected by
the international balance of payments and other economic and financial
conditions, government intervention, speculation and other factors. Moreover,
foreign currency exchange rates may be affected by the regulatory control of the
exchanges on which the currencies trade.
 
    Investments in foreign securities will also occasion risks relating to
political and economic developments abroad, including the possibility of
expropriations or confiscatory taxation, limitations on the use or transfer of
Fund assets and any effects of foreign social, economic or political
instability. Foreign companies are not subject to the regulatory requirements of
U.S. companies and, as such, there may be less publicly available information
about such companies. Moreover, foreign companies are not subject to uniform
accounting, auditing and financial reporting standards and requirements
comparable to those applicable to U.S. companies.
 
    Securities of foreign issuers may be less liquid than comparable securities
of U.S. issuers and, as such, their price changes may be more volatile.
Furthermore, foreign exchanges and broker-dealers are generally subject to less
government and exchange scrutiny and regulation than their American
counterparts. Brokerage commissions, dealer concessions and other transaction
costs may be higher on foreign markets than in the U.S. In addition, differences
in clearance and settlement procedures on foreign markets may occasion delays in
settlements of the Fund's trades effected in such markets. As such, the
inability to dispose of portfolio securities due to settlement delays could
result in losses to the Fund due to subsequent declines in value of such
securities and the inability of the Fund to make intended security purchases due
to settlement problems could result in a failure of the Fund to make potentially
advantageous investments. To the extent the Fund purchases Eurodollar
certificates of deposit issued by foreign branches of domestic Unites States
banks, consideration will be given to their domestic marketability, the lower
 
                                       8
<PAGE>
reserve requirements normally mandated for overseas banking operations, the
possible impact of interruptions in the flow of international currency
transactions and future international political and economic developments which
might adversely affect the payment of principal or interest.
 
    PRIVATE PLACEMENTS.  The Fund may invest up to 5% of its total assets in
securities which are subject to restrictions on resale because they have not
been registered under the Securities Act of 1933, as amended (the "Securities
Act"), or which are otherwise not readily marketable. (Securities eligible for
resale pursuant to Rule 144A under the Securities Act, and determined to be
liquid pursuant to the procedures discussed in the following paragraph, are not
subject to the foregoing restriction). These securities are generally referred
to as private placements or restricted securities. Limitations on the resale of
such securities may have an adverse effect on their marketability, and may
prevent the Fund from disposing of them promptly at reasonable prices. The Fund
may have to bear the expense of registering such securities for resale and the
risk of substantial delays in effecting such registration.
 
    The Securities and Exchange Commission has adopted Rule 144A under the
Securities Act, which permits the Fund to sell restricted securities to
qualified institutional buyers without limitation. The Investment Manager,
pursuant to procedures adopted by the Directors of the Fund, will make a
determination as to the liquidity of each restricted security purchased by the
Fund. If a restricted security is determined to be "liquid," such security will
not be included within the category "illiquid securities," which under current
policy may not exceed 15% of the Fund's total assets. However, investing in Rule
144A securities could have the effect of increasing the level of Fund
illiquidity to the extent the Fund, at a particular point in time, may be unable
to find qualified institutional buyers interested in purchasing such securities.
 
    REPURCHASE AGREEMENTS.  The Fund may enter into repurchase agreements, which
may be viewed as a type of secured lending by the Fund, and which typically
involve the acquisition by the Fund of debt securities from a selling financial
institution such as a bank, savings and loan association or broker-dealer. The
agreement provides that the Fund will sell back to the institution, and that the
institution will repurchase, the underlying security at a specified price and at
a fixed time in the future, usually not more than seven days from the date of
purchase. While repurchase agreements involve certain risks not associated with
direct investments in debt securities, including the risks of default or
bankruptcy of the selling financial institution, the Fund follows procedures
designed to minimize those risks. These procedures include effecting repurchase
transactions only with large, well-capitalized and well established financial
institutions and maintaining adequate collateralization. See the Statement of
Additional Information for a further discussion of such investments.
 
    ZERO COUPON SECURITIES.  A portion of the fixed-income securities purchased
by the Fund may be zero coupon securities. Such securities are purchased at a
discount from their face amount, giving the purchaser the right to receive their
full value at maturity. The interest earned on such securities is, implicitly,
automatically compounded and paid out at maturity. While such compounding at a
constant rate eliminates the risk of receiving lower yields upon reinvestment of
interest if prevailing interest rates decline, the owner of a zero coupon
security will be unable to participate in higher yields upon reinvestment of
interest received on interest-paying securities if prevailing interest rates
rise.
 
    A zero coupon security pays no interest to its holder during its life.
Therefore, to the extent the Fund invests in zero coupon securities, it will not
receive current cash available for distribution to shareholders. In addition,
zero coupon securities are subject to substantially greater price fluctuations
during periods of changing prevailing interest rates than are comparable
securities which pay interest on a current basis. Current federal tax law
requires that a holder (such as the Fund) of a zero coupon security accrue a
portion of the discount at which the security was purchased as income each
 
                                       9
<PAGE>
year even though the Fund receives no interest payments in cash on the security
during the year.
 
OPTIONS AND FUTURES TRANSACTIONS
 
    The Fund may purchase and sell (write) call and put options on debt and
equity securities which are listed on Exchanges or are written in over-the-
counter transactions ("OTC Options"). Listed options, which are currently listed
on several different Exchanges, are issued by the Options Clearing Corporation
("OCC"). OTC options are purchased from or sold (written) to dealers or
financial institutions which have entered into direct agreements with the Fund.
The Fund will engage in OTC option transactions only with primary U.S.
Government securities dealers recognized by the Federal Reserve Bank of New
York. The Fund will not write covered options on portfolio securities exceeding
in the aggregate 25% of the value of its total assets.
 
    The Fund may invest up to 10% of its total assets in the purchase of put and
call options on securities and stock indexes, with a maximum of 5% of the Fund's
total assets invested in stock index options. The Fund may purchase put options
on securities which it holds (or has the right to acquire) in its portfolio only
to protect itself against a decline in the value of the security. The Fund may
also purchase put options to close out written put positions. There are no other
limits on the Fund's ability to purchase call and put options. The Fund may also
purchase and write options on stock indexes. See "Risks of Options on Indexes"
in the Statement of Additional Information.
 
    The Fund may also purchase and sell interest rate and stock index futures
contracts ("futures contracts") that are traded on U.S. commodity exchanges on
such underlying securities as U.S. Treasury bonds, notes, and bills and GNMA
Certificates ("interest rate" futures) and such indexes as the S&P 500 Index and
the New York Stock Exchange Composite Index ("stock index" futures) and the
Moody's Investment-Grade Corporate Bond Index ("bond index" futures). The Fund
will purchase or sell interest rate futures contracts and bond index futures
contracts for the purpose of hedging its fixed-income portfolio (or anticipated
portfolio) securities against changes in prevailing interest rates. The Fund
will purchase or sell stock index futures contracts for the purpose of hedging
its equity portfolio (or anticipated portfolio) securities against changes in
their prices.
 
    The Fund also may purchase and write call and put options on futures
contracts and enter into closing transactions with respect to such options to
terminate an existing position.
 
    RISKS OF OPTIONS AND FUTURES TRANSACTIONS. The Fund may close out its
position as writer of an option, or as a buyer or seller of a futures contract
only if a liquid secondary market exists for options or futures contracts of
that series. There is no assurance that such a market will exist. Also,
exchanges may limit the amount by which the price of many futures contracts may
move on any day. If the price moves equal the daily limit on successive days,
then it may prove impossible to liquidate a futures position until the daily
limit moves have ceased. The extent to which the Fund may enter into
transactions involving options and futures contracts may be limited by the
Internal Revenue Code's requirements for qualification as a regulated investment
company and the Fund's intention to qualify as such. See "Dividends,
Distributions and Taxes."
 
    While the futures contracts and options transactions to be engaged in by the
Fund for the purpose of hedging the Fund's portfolio securities are not
speculative in nature, there are risks inherent in the use of such instruments.
One such risk is that the Investment Manager could be incorrect in its
expectations as to the direction or extent of various interest rate or price
movements or the time span within which the movements take place. For example,
if the Fund sold futures contracts for the sale of securities in anticipation of
an increase in interest rates, and then interest rates went down, causing bond
prices to rise, the Fund would incur a loss on the sale. Another risk which may
arise in employing futures contracts to protect against the price volatility of
portfolio securities is that the prices of securities and indexes subject to
futures contracts (and
 
                                       10
<PAGE>
thereby the futures contracts prices) may correlate imperfectly with the
behavior of the cash prices of the Fund's portfolio securities. See the
Statement of Additional Information for further discussion of such risks.
 
    New futures contracts, options and other financial products and various
combinations thereof continue to be developed. The Fund may invest in any such
futures, options or products as may be developed, to the extent consistent with
its investment objective and applicable regulatory requirements.
 
SPECIFIC INVESTMENT POLICIES
 
    The Fund has adopted the following specific policies which are not
fundamental investment policies and which may be changed by the Fund's Board of
Directors:
 
    (1) At least 65% of the Fund's total assets will be invested in common stock
of domestic and foreign companies in the natural resources areas described
above. The Fund may also invest in securities convertible into common stock and
may acquire warrants and other rights to acquire common stock in connection with
purchases of portfolio securities.
 
    (2) The Fund may invest in securities of foreign companies. However, the
Fund will not invest more than 10% of its net assets in securities of such
issuers (other than Canadian issuers on which there is no limit). Investments in
certain Canadian issuers may be speculative due to certain political risks and
may be subject to substantial price fluctuations. The Fund's investments in
unlisted foreign securities are deemed to be illiquid securities, which under
the Fund's current investment policies may not in the aggregate amount to more
than 15% of the Fund's total assets. Foreign securities investments may be
affected by changes in currency rates or exchange control regulations, changes
in governmental administration or economic or monetary policy (in the United
States and abroad) or changed circumstances in dealings between nations. Costs
may be incurred in connection with conversions between various currencies held
by the Fund.
 
    (3) Up to 35% of the value of the Fund's total assets may be invested in:
(a) common stock of companies not in the natural resources areas; (b) investment
grade corporate debt securities when, in the opinion of the Investment Manager,
the projected total return on such securities is equal to or greater than the
expected total return on equity securities, or when such holdings might be
expected to reduce the volatility of the portfolio (for purposes of this
provision, the term "total return" means the difference between the cost of a
security and the aggregate of its market value and dividends received); (c) U.S.
Government securities (securities issued or guaranteed as to principal and
interest by the United States or its agencies and instrumentalities); and (d) in
money market instruments under any one or more of the following circumstances:
(i) pending investment of proceeds of sale of Fund shares or of portfolio
securities; (ii) pending settlement of purchases of portfolio securities; or
(iii) to maintain liquidity for the purpose of meeting anticipated redemptions.
 
    (4) Notwithstanding any of the foregoing limitations, the Fund may invest
more than 35% of its total assets in money market instruments to maintain,
temporarily, a "defensive" posture when, in the opinion of the Investment
Manager, it is advisable to do so because of economic or market conditions.
 
    The foregoing limitations will apply at the time of acquisition based on the
last determined value of the relevant security or other change in the Fund's
assets. Any subsequent change in any applicable percentage resulting from
fluctuations in value will not require elimination of any security from the
portfolio.
 
PORTFOLIO MANAGEMENT
 
   
    The Fund's portfolio is actively managed by its Investment Manager with a
view to achieving the Fund's investment objective. In determining which
securities to purchase for the Fund or hold in the Fund's portfolio, the
Investment Manager will rely on information from various sources, including
research, analysis and appraisals of brokers and dealers, including Dean Witter
Reynolds Inc. ("DWR"), and other brokers and dealers that are affiliates of the
Investment Manager, and others regarding economic developments and interest rate
    
 
                                       11
<PAGE>
   
trends; and the Investment Manager's own analysis of factors it deems relevant.
In addition, the Fund may incur brokerage commissions on transactions conducted
through such affiliates. No particular emphasis will be given to investments in
securities for the purpose of earning current income. The Fund is managed within
InterCapital's Growth Group, which manages 31 funds and fund porfolios with
approximately $13.1 billion in assets at May 31, 1997. David F. Myers and
Catherine A. Maniscalco, each a Vice President of InterCapital and a member of
the Growth Group, have been the primary portfolio managers of the Fund since
July 1997. Mr. Myers has been a portfolio manager at InterCapital for over five
years. Prior to joining InterCapital in March 1995, Ms. Maniscalco was a
portfolio management software product specialist at National Investor Data
Services (April 1994 - March 1995) and a portfolio manager at Prudential
Securities Investment Management (July 1990 - April 1994).
    
 
   
    Orders for transactions in portfolio securities and commodities are placed
for the Fund with a number of brokers and dealers, including DWR and other
brokers and dealers that are affiliates of the Investment Manager. The Fund may
incur brokerage commissions on transactions conducted through such affiliates.
It is not anticipated that the portfolio trading will result in the Fund's
portfolio turnover rate exceeding 200% in any one year. The Fund will incur
brokerage costs commensurate with its portfolio turnover rate.
    
 
   
    Pursuant to an order of the Securities and Exchange Commission, the Fund may
effect principal transactions in certain money market instruments with DWR.
    
 
    Although the Fund does not engage in substantial short-term trading as a
means of achieving its investment objective, it may sell portfolio securities
without regard to the length of time they have been held, in accordance with the
investment policies described earlier. The Fund will incur underwriting discount
costs (on underwritten securities) and brokerage costs commensurate with its
portfolio turnover rate. Short term gains and losses may result from such
portfolio transactions. See "Dividends, Distributions and Taxes" for a full
discussion of the tax implications of the Fund's trading policy.
 
INVESTMENT RESTRICTIONS
- --------------------------------------------------------------------------------
 
    The investment restrictions listed below are among the restrictions which
have been adopted by the Fund as fundamental policies. Under the Investment
Company Act of 1940, as amended (the "Act"), a fundamental policy may not be
changed without the vote of a majority of the outstanding voting securities of
the Fund, as defined in the Act. For purposes of the following limitations: (i)
all percentage limitations apply immediately after a purchase or initial
investment; and (ii) any subsequent change in any applicable percentage
resulting from market fluctuations or other changes in total or net assets does
not require elimination of any security from the portfolio.
 
    The Fund may not:
 
    1. Invest more than 5% of the value of its total assets in the securities of
any one issuer (other than obligations issued or guaranteed by the United States
Government, its agencies or instrumentalities).
 
    2. Purchase more than 10% of all outstanding voting securities or any class
of securities of any one issuer.
 
    3. Invest more than 25% of the value of its total assets in securities of
issuers in any one industry. This restriction does not apply to bank obligations
or obligations issued or guaranteed by the United States Government or its
agencies or instrumentalities.
 
    4. Invest more than 5% of the value of its total assets in securities of
issuers having a record, together with predecessors, of less than three years of
continuous operation. This restriction shall not apply to any obligation issued
or guaranteed by the United States Government, its agencies or
instrumentalities.
 
                                       12
<PAGE>
   
    Notwithstanding any other investment policy or restriction, the Fund may
seek to achieve its investment objective by investing all or substantially all
of its assets in another investment company having substantially the same
investment objective and policies as the Fund.
    
 
PURCHASE OF FUND SHARES
- --------------------------------------------------------------------------------
 
   
GENERAL
    
 
   
    The Fund offers each class of its shares for sale to the public on a
continuous basis. Pursuant to a Distribution Agreement between the Fund and Dean
Witter Distributors Inc. (the "Distributor"), an affiliate of the Investment
Manager, shares of the Fund are distributed by the Distributor and offered by
DWR and other brokers and dealers who have entered into agreements with the
Distributor ("Selected Broker-Dealers"). The principal executive office of the
Distributor is located at Two World Trade Center, New York, New York 10048.
    
 
   
    The Fund offers four classes of shares (each, a "Class"). Class A shares are
sold to investors with an initial sales charge that declines to zero for larger
purchases; however, Class A shares sold without an initial sales charge are
subject to a contingent deferred sales charge ("CDSC") of 1.0% if redeemed
within one year of purchase, except for certain specific circumstances. Class B
shares are sold without an initial sales charge but are subject to a CDSC
(scaled down from 5.0% to 1.0%) payable upon most redemptions within six years
after purchase. (Class B shares purchased by certain qualified
employer-sponsored benefit plans are subject to a CDSC scaled down from 2.0% to
1.0% if redeemed within three years after purchase.) Class C shares are sold
without an initial sales charge but are subject to a CDSC of 1.0% on most
redemptions made within one year after purchase. Class D shares are sold without
an initial sales charge or CDSC and are available only to investors meeting an
initial investment minimum of $5 million, and to certain other limited
categories of investors. At the discretion of the Board of Directors of the
Fund, Class A shares may be sold to categories of investors in addition to those
set forth in this prospectus at net asset value without a front-end sales
charge, and Class D shares may be sold to certain other categories of investors,
in each case as may be described in the then current prospectus of the Fund. See
"Alternative Purchase Arrangements-- Selecting a Particular Class" for a
discussion of factors to consider in selecting which Class of shares to
purchase.
    
 
   
    The minimum initial purchase is $1,000 for each Class of shares, although
Class D shares are only available to persons investing $5 million or more and to
certain other limited categories of investors. For the purpose of meeting the
minimum $5 million initial investment for Class D shares, and subject to the
$1,000 minimum initial investment for each Class of the Fund, an investor's
existing holdings of Class A shares of the Fund and other Dean Witter Funds that
are multiple class funds ("Dean Witter Multi-Class Funds") and shares of Dean
Witter Funds sold with a front-end sales charge ("FSC Funds") and concurrent
investments in Class D shares of the Fund and other Dean Witter Multi-Class
Funds will be aggregated. Subsequent purchases of $100 or more may be made by
sending a check, payable to Dean Witter Natural Resource Development Securities
Inc., directly to Dean Witter Trust Company (the "Transfer Agent") at P.O. Box
1040, Jersey City, NJ 07303 or by contacting an account executive of DWR or
other Selected Broker-Dealer. When purchasing shares of the Fund, investors must
specify whether the purchase is for Class A, Class B, Class C or Class D shares.
If no Class is specified, the Transfer Agent will not process the transaction
until the proper Class is identified. The minimum initial purchase in the case
of investments through EasyInvest -SM-, an automatic purchase plan (see
"Shareholder Services"), is $100, provided that the schedule of automatic
investments will result in investments totalling at least $1,000 within the
first twelve months. In the case of investments pursuant to Systematic Payroll
Deduction Plans (including Individual Retirement
    
 
                                       13
<PAGE>
Plans), the Fund, in its discretion, may accept investments without regard to
any minimum amounts which would otherwise be required if the Fund has reason to
believe that additional investments will increase the investment in each account
under such Plans to at least $1,000. Certificates for shares purchased will not
be issued unless requested by the shareholder in writing to the Transfer Agent.
 
   
    Shares of the Fund are sold through the Distributor on a normal three
business day settlement basis; that is, payment is due on the third business day
(settlement date) after the order is placed with the Distributor. Since DWR and
other Selected Broker-Dealers forward investors' funds on settlement date, they
will benefit from the temporary use of the funds if payment is made prior
thereto. As noted above, orders placed directly with the Transfer Agent must be
accompanied by payment. Investors will be entitled to receive income dividends
and capital gains distributions if their order is received by the close of
business on the day prior to the record date for such dividends and
distributions. Sales personnel of a Selected Broker-Dealer are compensated for
selling shares of the Fund by the Distributor or any of its affiliates and/or
the Selected Broker-Dealer. In addition, some sales personnel of the Selected
Broker-Dealer will receive various types of non-cash compensation as special
sales incentives including trips, educational and/or business seminars and
merchandise. The Fund and the Distributor reserve the right to reject any
purchase orders.
    
 
   
ALTERNATIVE PURCHASE ARRANGEMENTS
    
 
   
    The Fund offers several Classes of shares to investors designed to provide
them with the flexibility of selecting an investment best suited to their needs.
The general public is offered three Classes of shares: Class A shares, Class B
shares and Class C shares, which differ principally in terms of sales charges
and rate of expenses to which they are subject. A fourth Class of shares, Class
D shares, is offered only to limited categories of investors (see "No Load
Alternative--Class D Shares" below).
    
 
   
    Each Class A, Class B, Class C or Class D share of the Fund represents an
identical interest in the investment portfolio of the Fund except that Class A,
Class B and Class C shares bear the expenses of the ongoing shareholder service
fees, Class B and Class C shares bear the expenses of the ongoing distribution
fees and Class A, Class B and Class C shares which are redeemed subject to a
CDSC bear the expense of the additional incremental distribution costs resulting
from the CDSC applicable to shares of those Classes. The ongoing distribution
fees that are imposed on Class A, Class B and Class C shares will be imposed
directly against those Classes and not against all assets of the Fund and,
accordingly, such charges against one Class will not affect the net asset value
of any other Class or have any impact on investors choosing another sales charge
option. See "Plan of Distribution" and "Redemptions and Repurchases."
    
 
   
    Set forth below is a summary of the differences between the Classes and the
factors an investor should consider when selecting a particular Class. This
summary is qualified in its entirety by detailed discussion of each Class that
follows this summary.
    
 
   
    CLASS A SHARES.  Class A shares are sold at net asset value plus an initial
sales charge of up to 5.25%. The initial sales charge is reduced for certain
purchases. Investments of $1 million or more (and investments by certain other
limited categories of investors) are not subject to any sales charges at the
time of purchase but are subject to a CDSC of 1.0% on redemptions made within
one year after purchase, except for certain specific circumstances. Class A
shares are also subject to a 12b-1 fee of up to 0.25% of the average daily net
assets of the Class. See "Initial Sales Charge Alternative--Class A Shares."
    
 
   
    CLASS B SHARES.  Class B shares are offered at net asset value with no
initial sales charge but are subject to a CDSC (scaled down from 5.0% to 1.0%)
if redeemed within six years of purchase. (Class B shares purchased by certain
qualified employer-sponsored benefit plans are subject to a CDSC scaled down
from 2.0% to 1.0% if redeemed within three years after purchase.) This CDSC may
be
    
 
                                       14
<PAGE>
   
waived for certain redemptions. Class B shares are also subject to an annual
12b-1 fee of 1.0% of the lesser of: (a) the average daily aggregate gross sales
of the Fund's Class B shares since the inception of the 12b-1 Plan on July 2,
1984 (not including reinvestments of dividends or capital gains distributions),
less the average daily aggregate net asset value of the Fund's Class B shares
redeemed since the inception of the 12b-1 Plan upon which a CDSC has been
imposed or waived, or (b) the average daily net assets of Class B attributable
to shares issued, net of related shares redeemed, since the inception of the
12b-1 Plan. The Class B shares' distribution fee will cause that Class to have
higher expenses and pay lower dividends than Class A or Class D shares.
    
 
   
    After approximately ten (10) years, Class B shares will convert
automatically to Class A shares of the Fund, based on the relative net asset
values of the shares of the two Classes on the conversion date. In addition, a
certain portion of Class B shares that have been acquired through the
reinvestment of dividends and distributions will be converted at that time. See
"Contingent Deferred Sales Charge Alternative--Class B Shares."
    
 
   
    CLASS C SHARES.  Class C shares are sold at net asset value with no initial
sales charge but are subject to a CDSC of 1.0% on redemptions made within one
year after purchase. This CDSC may be waived for certain redemptions. They are
subject to an annual 12b-1 fee of up to 1.0% of the average daily net assets of
the Class C shares. The Class C shares' distribution fee may cause that Class to
have higher expenses and pay lower dividends than Class A or Class D shares. See
"Level Load Alternative--Class C Shares."
    
 
   
    CLASS D SHARES.  Class D shares are available only to limited categories of
investors (see "No Load Alternative--Class D Shares" below). Class D shares are
sold at net asset value with no initial sales charge or CDSC. They are not
subject to any 12b-1 fees. See "No Load Alternative--Class D Shares."
    
 
   
    SELECTING A PARTICULAR CLASS.  In deciding which Class of Fund shares to
purchase, investors should consider the following factors, as well as any other
relevant facts and circumstances:
    
 
   
    The decision as to which Class of shares is more beneficial to an investor
depends on the amount and intended length of his or her investment. Investors
who prefer an initial sales charge alternative may elect to purchase Class A
shares. Investors qualifying for significantly reduced or, in the case of
purchases of $1 million or more, no initial sales charges may find Class A
shares particularly attractive because similar sales charge reductions are not
available with respect to Class B or Class C shares. Moreover, Class A shares
are subject to lower ongoing expenses than are Class B or Class C shares over
the term of the investment. As an alternative, Class B and Class C shares are
sold without any initial sales charge so the entire purchase price is
immediately invested in the Fund. Any investment return on these additional
investment amounts may partially or wholly offset the higher annual expenses of
these Classes. Because the Fund's future return cannot be predicted, however,
there can be no assurance that this would be the case.
    
 
   
    Finally, investors should consider the effect of the CDSC period and any
conversion rights of the Classes in the context of their own investment time
frame. For example, although Class C shares are subject to a significantly lower
CDSC upon redemptions, they do not, unlike Class B shares, convert into Class A
shares after approximately ten years, and, therefore, are subject to an ongoing
12b-1 fee of 1.0% (rather than the 0.25% fee applicable to Class A shares) for
an indefinite period of time. Thus, Class B shares may be more attractive than
Class C shares to investors with longer term investment outlooks. Other
investors, however, may elect to purchase Class C shares if, for example, they
determine that they do not wish to be subject to a front-end sales charge and
they are uncertain as to the length of time they intend to hold their shares.
    
 
   
    For the purpose of meeting the $5 million minimum investment amount for
Class D shares, holdings of Class A shares in all Dean Witter Multi-Class Funds,
shares of FSC Funds and shares of Dean
    
 
                                       15
<PAGE>
   
Witter Funds for which such shares have been exchanged will be included together
with the current investment amount.
    
 
   
    Sales personnel may receive different compensation for selling each Class of
shares. Investors should understand that the purpose of a CDSC is the same as
that of the initial sales charge in that the sales charges applicable to each
Class provide for the financing of the distribution of shares of that Class.
    
 
   
    Set forth below is a chart comparing the sales charge, 12b-1 fees and
conversion options applicable to each Class of shares:
    
 
   
<TABLE>
<CAPTION>
<C>        <S>              <C>         <C>
                                         CONVERSION
  CLASS     SALES CHARGE    12B-1 FEE      FEATURE
    A      Maximum 5.25%        0.25%        No
           initial sales
           charge reduced
           for purchases
           of $25,000 and
           over; shares
           sold without an
           initial sales
           charge
           generally
           subject to a
           1.0% CDSC
           during first
           year.
    B      Maximum 5.0%         1.0%    B shares
           CDSC during the              convert to A
           first year                   shares
           decreasing to 0              automatically
           after six years              after
                                        approximately
                                        ten years
    C      1.0% CDSC            1.0%         No
           during first
           year
    D           None           None          No
</TABLE>
    
 
   
    See "Purchase of Fund Shares" and "The Fund and its Management" for a
complete description of the sales charges and service and distribution fees for
each Class of shares and "Determination of Net Asset Value," "Dividends,
Distributions and Taxes" and "Shareholder Services--Exchange Privilege" for
other differences between the Classes of shares.
    
 
   
INITIAL SALES CHARGE ALTERNATIVE--CLASS A SHARES
    
 
   
    Class A shares are sold at net asset value plus an initial sales charge. In
some cases, reduced sales charges may be available, as described below.
Investments of $1 million or more (and investments by certain other limited
categories of investors) are not subject to any sales charges at the time of
purchase but are subject to a CDSC of 1.0% on redemptions made within one year
after purchase (calculated from the last day of the month in which the shares
were purchased), except for certain specific circumstances. The CDSC will be
assessed on an amount equal to the lesser of the current market value or the
cost of the shares being redeemed. The CDSC will not be imposed (i) in the
circumstances set forth below in the section "Contingent Deferred Sales Charge
Alternative--Class B Shares--CDSC Waivers," except that the references to six
years in the first paragraph of that section shall mean one year in the case of
Class A shares, and (ii) in the circumstances identified in the section
"Additional Net Asset Value Purchase Options" below. Class A shares are also
subject to an annual 12b-1 fee of up to 0.25% of the average daily net assets of
the Class.
    
 
   
    The offering price of Class A shares will be the net asset value per share
next determined following receipt of an order (see "Determination of Net Asset
Value" below), plus a sales charge (expressed as a percentage of the offering
price) on a single transaction as shown in the following table:
    
 
   
<TABLE>
<CAPTION>
                                          SALES CHARGE
                           ------------------------------------------
                              PERCENTAGE OF          APPROXIMATE
    AMOUNT OF SINGLE         PUBLIC OFFERING    PERCENTAGE OF AMOUNT
       TRANSACTION                PRICE               INVESTED
- -------------------------  -------------------  ---------------------
<S>                        <C>                  <C>
Less than $25,000........           5.25%                 5.54%
$25,000 but less
     than $50,000........           4.75%                 4.99%
$50,000 but less
     than $100,000.......           4.00%                 4.17%
$100,000 but less
     than $250,000.......           3.00%                 3.09%
$250,000 but less
     than $1 million.....           2.00%                 2.04%
$1 million and over......              0                     0
</TABLE>
    
 
   
    Upon notice to all Selected Broker-Dealers, the Distributor may reallow up
to the full applicable sales charge as shown in the above schedule during
periods specified in such notice. During periods when 90% or more of the sales
charge is reallowed,
    
 
                                       16
<PAGE>
   
such Selected Broker-Dealers may be deemed to be underwriters as that term is
defined in the Securities Act of 1933.
    
 
   
    The above schedule of sales charges is applicable to purchases in a single
transaction by, among others: (a) an individual; (b) an individual, his or her
spouse and their children under the age of 21 purchasing shares for his, her or
their own accounts; (c) a trustee or other fiduciary purchasing shares for a
single trust estate or a single fiduciary account; (d) a pension, profit-sharing
or other employee benefit plan qualified or non-qualified under Section 401 of
the Internal Revenue Code; (e) tax-exempt organizations enumerated in Section
501(c)(3) or (13) of the Internal Revenue Code; (f) employee benefit plans
qualified under Section 401 of the Internal Revenue Code of a single employer or
of employers who are "affiliated persons" of each other within the meaning of
Section 2(a)(3)(c) of the Act; and for investments in Individual Retirement
Accounts of employees of a single employer through Systematic Payroll Deduction
plans; or (g) any other organized group of persons, whether incorporated or not,
provided the organization has been in existence for at least six months and has
some purpose other than the purchase of redeemable securities of a registered
investment company at a discount.
    
 
   
    COMBINED PURCHASE PRIVILEGE.  Investors may have the benefit of reduced
sales charges in accordance with the above schedule by combining purchases of
Class A shares of the Fund in single transactions with the purchase of Class A
shares of other Dean Witter Multi-Class Funds and shares of FSC Funds. The sales
charge payable on the purchase of the Class A shares of the Fund, the Class A
shares of the other Dean Witter Multi-Class Funds and the shares of the FSC
Funds will be at their respective rates applicable to the total amount of the
combined concurrent purchases of such shares.
    
 
   
    RIGHT OF ACCUMULATION.  The above persons and entities may benefit from a
reduction of the sales charges in accordance with the above schedule if the
cumulative net asset value of Class A shares purchased in a single transaction,
together with shares of the Fund and other Dean Witter Funds previously
purchased at a price including a front-end sales charge (including shares of the
Fund and other Dean Witter Funds acquired in exchange for those shares, and
including in each case shares acquired through reinvestment of dividends and
distributions), which are held at the time of such transaction, amounts to
$25,000 or more. If such investor has a cumulative net asset value of shares of
FSC Funds and Class A and Class D shares equal to at least $5 million, such
investor is eligible to purchase Class D shares subject to the $1,000 minimum
initial investment requirement of that Class of the Fund. See "No Load
Alternative-- Class D Shares" below.
    
 
   
    The Distributor must be notified by DWR or a Selected Broker-Dealer or the
shareholder at the time a purchase order is placed that the purchase qualifies
for the reduced charge under the Right of Accumulation. Similar notification
must be made in writing by the dealer or shareholder when such an order is
placed by mail. The reduced sales charge will not be granted if: (a) such
notification is not furnished at the time of the order; or (b) a review of the
records of the Selected Broker-Dealer or the Transfer Agent fails to confirm the
investor's represented holdings.
    
 
   
    LETTER OF INTENT.  The foregoing schedule of reduced sales charges will also
be available to investors who enter into a written Letter of Intent providing
for the purchase, within a thirteen-month period, of Class A shares of the Fund
from DWR or other Selected Broker-Dealers. The cost of Class A shares of the
Fund or shares of other Dean Witter Funds which were previously purchased at a
price including a front-end sales charge during the 90-day period prior to the
date of receipt by the Distributor of the Letter of Intent, or of Class A shares
of the Fund or shares of other Dean Witter Funds acquired in exchange for shares
of such funds purchased during such period at a price including a front-end
sales charge, which are still
    
 
                                       17
<PAGE>
   
owned by the shareholder, may also be included in determining the applicable
reduction.
    
 
   
    ADDITIONAL NET ASSET VALUE PURCHASE OPTIONS. In addition to investments of
$1 million or more, Class A shares also may be purchased at net asset value by
the following:
    
 
   
    (1)  trusts for which Dean Witter Trust Company ("DWTC") or Dean Witter
Trust FSB ("DWTFSB") (each of which is an affiliate of the Investment Manager)
provides discretionary trustee services;
    
 
   
    (2)  persons participating in a fee-based program approved by the
Distributor, pursuant to which such persons pay an asset based fee for services
in the nature of investment advisory or administrative services (such
investments are subject to all of the terms and conditions of such programs,
which may include termination fees and restrictions on transferability of Fund
shares);
    
 
   
    (3)  retirement plans qualified under Section 401(k) of the Internal Revenue
Code ("401(k) plans") and other employer-sponsored plans qualified under Section
401(a) of the Internal Revenue Code with at least 200 eligible employees and for
which DWTC or DWTFSB serves as Trustee or the 401(k) Support Services Group of
DWR serves as recordkeeper;
    
 
   
    (4)  401(k) plans and other employer-sponsored plans qualified under Section
401(a) of the Internal Revenue Code for which DWTC or DWTFSB serves as Trustee
or the 401(k) Support Services Group of DWR serves as recordkeeper whose Class B
shares have converted to Class A shares, regardless of the plan's asset size or
number of eligible employees;
    
 
   
    (5)  investors who are clients of a Dean Witter account executive who joined
Dean Witter from another investment firm within six months prior to the date of
purchase of Fund shares by such investors, if the shares are being purchased
with the proceeds from a redemption of shares of an open-end proprietary mutual
fund of the account executive's previous firm which imposed either a front-end
or deferred sales charge, provided such purchase was made within sixty days
after the redemption and the proceeds of the redemption had been maintained in
the interim in cash or a money market fund; and
    
 
   
    (6)  other categories of investors, at the discretion of the Board, as
disclosed in the then current prospectus of the Fund.
    
 
   
    No CDSC will be imposed on redemptions of shares purchased pursuant to
paragraphs (1), (2) or (5), above.
    
 
   
    For further information concerning purchases of the Fund's shares, contact
DWR or another Selected Broker-Dealer or consult the Statement of Additional
Information.
    
 
   
CONTINGENT DEFERRED SALES CHARGE ALTERNATIVE-- CLASS B SHARES
    
 
   
    Class B shares are sold at net asset value next determined without an
initial sales charge so that the full amount of an investor's purchase payment
may be immediately invested in the Fund. A CDSC, however, will be imposed on
most Class B shares redeemed within six years after purchase. The CDSC will be
imposed on any redemption of shares if after such redemption the aggregate
current value of a Class B account with the Fund falls below the aggregate
amount of the investor's purchase payments for Class B shares made during the
six years (or, in the case of shares held by certain employer-sponsored benefit
plans, three years) preceding the redemption. In addition, Class B shares are
subject to an annual 12b-1 fee of 1.0% of the lesser of: (a) the average daily
aggregate gross sales of the Fund's Class B shares since the inception of the
12b-1 Plan on July 2, 1984 (not including reinvestments of dividends or capital
gains distributions), less the average daily aggregate net asset value of the
Fund's Class B shares redeemed since the inception of the 12b-1 Plan upon which
a CDSC has been imposed or waived, or (b) the average daily net assets of Class
B attributable to shares issued, net of related shares redeemed, since the
inception of the 12b-1 Plan.
    
 
                                       18
<PAGE>
   
    Except as noted below, Class B shares of the Fund which are held for six
years or more after purchase (calculated from the last day of the month in which
the shares were purchased) will not be subject to any CDSC upon redemption.
Shares redeemed earlier than six years after purchase may, however, be subject
to a CDSC which will be a percentage of the dollar amount of shares redeemed and
will be assessed on an amount equal to the lesser of the current market value or
the cost of the shares being redeemed. The size of this percentage will depend
upon how long the shares have been held, as set forth in the following table:
    
 
   
<TABLE>
<CAPTION>
           YEAR SINCE                     CDSC AS A
            PURCHASE                    PERCENTAGE OF
          PAYMENT MADE                 AMOUNT REDEEMED
- ---------------------------------  -----------------------
<S>                                <C>
First............................              5.0%
Second...........................              4.0%
Third............................              3.0%
Fourth...........................              2.0%
Fifth............................              2.0%
Sixth............................              1.0%
Seventh and thereafter...........              None
</TABLE>
    
 
   
    In the case of Class B shares of the Fund held by 401 (k) plans or other
employer-sponsored plans qualified under Section 401(a) of the Internal Revenue
Code for which DWTC or DWTFSB serves as Trustee or the 401(k) Support Services
Group of DWR serves as recordkeeper and whose accounts are opened on or after
July 28, 1997, shares held for three years or more after purchase (calculated as
described in the paragraph above) will not be subject to any CDSC upon
redemption. However, shares redeemed earlier than three years after purchase may
be subject to a CDSC (calculated as described in the paragraph above), the
percentage of which will depend on how long the shares have been held, as set
forth in the following table:
    
 
   
<TABLE>
<CAPTION>
           YEAR SINCE
            PURCHASE               CDSC AS A PERCENTAGE OF
          PAYMENT MADE                 AMOUNT REDEEMED
- ---------------------------------  -----------------------
<S>                                <C>
First............................              2.0%
Second...........................              2.0%
Third............................              1.0%
Fourth and thereafter............              None
</TABLE>
    
 
   
    CDSC WAIVERS.  A CDSC will not be imposed on: (i) any amount which
represents an increase in value of shares purchased within the six years (or, in
the case of shares held by certain employer-sponsored benefit plans, three
years) preceding the redemption; (ii) the current net asset value of shares
purchased more than six years (or, in the case of shares held by certain
employer-sponsored benefit plans, three years) prior to the redemption; and
(iii) the current net asset value of shares purchased through reinvestment of
dividends or distributions and/or shares acquired in exchange for shares of FSC
Funds or other Dean Witter Funds acquired in exchange for such shares. Moreover,
in determining whether a CDSC is applicable it will be assumed that amounts
described in (i), (ii) and (iii) above (in that order) are redeemed first.
    
 
   
    In addition, the CDSC, if otherwise applicable, will be waived in the case
of:
    
 
   
    (1)  redemptions of shares held at the time a shareholder dies or becomes
disabled, only if the shares are:  (A) registered either in the name of an
individual shareholder (not a trust), or in the names of such shareholder and
his or her spouse as joint tenants with right of survivorship; or  (B) held in a
qualified corporate or self-employed retirement plan, Individual Retirement
Account ("IRA") or Custodial Account under Section 403(b)(7) of the Internal
Revenue Code ("403(b) Custodial Account"), provided in either case that the
redemption is requested within one year of the death or initial determination of
disability;
    
 
   
    (2)  redemptions in connection with the following retirement plan
distributions:  (A) lump-sum or other distributions from a qualified corporate
or self-employed retirement plan following retirement (or, in the case of a "key
employee" of a "top heavy" plan, following attainment of age 59 1/2); (B)
distributions from an IRA or 403(b) Custodial
Account following attainment of age 59 1/2; or  (C) a tax-free return of an
excess contribution to an IRA; and
    
 
   
    (3)  all redemptions of shares held for the benefit of a participant in a
401(k) plan or other employer-sponsored plan qualified under
    
 
                                       19
<PAGE>
   
Section 401(a) of the Internal Revenue Code which offers investment companies
managed by the Investment Manager or its subsidiary, Dean Witter Services
Company Inc., as self-directed investment alternatives and for which DWTC or
DWTFSB serves as Trustee or the 401(k) Support Services Group of DWR serves as
recordkeeper ("Eligible Plan"), provided that either:  (A) the plan continues to
be an Eligible Plan after the redemption; or  (B) the redemption is in
connection with the complete termination of the plan involving the distribution
of all plan assets to participants.
    
 
   
    With reference to (1) above, for the purpose of determining disability, the
Distributor utilizes the definition of disability contained in Section 72(m)(7)
of the Internal Revenue Code, which relates to the inability to engage in
gainful employment. With reference to (2) above, the term "distribution" does
not encompass a direct transfer of IRA, 403(b) Custodial Account or retirement
plan assets to a successor custodian or trustee. All waivers will be granted
only following receipt by the Distributor of confirmation of the shareholder's
entitlement.
    
 
   
    CONVERSION TO CLASS A SHARES.  All shares of the Fund held prior to July 28,
1997, other than shares which were purchased prior to July 2, 1984 (and, with
respect to such shares, including such proportion of shares acquired through
reinvestment of dividends and capital gains distributions as the total number of
shares acquired prior to such date bears to the total number of Fund shares
purchased and owned by a shareholder (collectively, the "Old Shares")), have
been designated Class B shares. Shares held before May 1, 1997 that have been
designated Class B shares will convert to Class A shares in May, 2007. In all
other instances Class B shares will convert automatically to Class A shares,
based on the relative net asset values of the shares of the two Classes on the
conversion date, which will be approximately ten (10) years after the date of
the original purchase. The ten year period is calculated from the last day of
the month in which the shares were purchased or, in the case of Class B shares
acquired through an exchange or a series of exchanges, from the last day of the
month in which the original Class B shares were purchased, provided that shares
originally purchased before May 1, 1997 will convert to Class A shares in May,
2007. The conversion of shares purchased on or after May 1, 1997 will take place
in the month following the tenth anniversary of the purchase. There will also be
converted at that time such proportion of Class B shares acquired through
automatic reinvestment of dividends and distributions owned by the shareholder
as the total number of his or her Class B shares converting at the time bears to
the total number of outstanding Class B shares purchased and owned by the
shareholder. In the case of Class B shares held by a 401(k) plan or other
employer-sponsored plan qualified under Section 401(a) of the Internal Revenue
Code and for which DWTC or DWTFSB serves as Trustee or the 401(k) Support
Services Group of DWR serves as recordkeeper, the plan is treated as a single
investor and all Class B shares will convert to Class A shares on the conversion
date of the first shares of a Dean Witter Multi-Class Fund purchased by that
plan. In the case of Class B shares previously exchanged for shares of an
"Exchange Fund" (see "Shareholder Services--Exchange Privilege"), the period of
time the shares were held in the Exchange Fund (calculated from the last day of
the month in which the Exchange Fund shares were acquired) is excluded from the
holding period for conversion. If those shares are subsequently re-exchanged for
Class B shares of a Dean Witter Multi-Class Fund, the holding period resumes on
the last day of the month in which Class B shares are reacquired.
    
 
   
    If a shareholder has received share certificates for Class B shares, such
certificates must be delivered to the Transfer Agent at least one week prior to
the date for conversion. Class B shares evidenced by share certificates that are
not received by the Transfer Agent at least one week prior to any conversion
date will be converted into Class A shares on the next scheduled conversion date
after such certificates are received.
    
 
   
    Effectiveness of the conversion feature is subject to the continuing
availability of a ruling of the Internal Revenue Service or an opinion of
counsel
    
 
                                       20
<PAGE>
   
that (i) the conversion of shares does not constitute a taxable event under the
Internal Revenue Code, (ii) Class A shares received on conversion will have a
basis equal to the shareholder's basis in the converted Class B shares
immediately prior to the conversion, and (iii) Class A shares received on
conversion will have a holding period that includes the holding period of the
converted Class B shares. The conversion feature may be suspended if the ruling
or opinion is no longer available. In such event, Class B shares would continue
to be subject to Class B 12b-1 fees.
    
 
   
    Class B shares purchased before July 28, 1997 by trusts for which DWTC or
DWTFSB provides discretionary trustee services will convert to Class A shares on
or about August 29, 1997. The CDSC will not be applicable to such shares.
    
 
   
LEVEL LOAD ALTERNATIVE--CLASS C SHARES
    
 
   
    Class C shares are sold at net asset value next determined without an
initial sales charge but are subject to a CDSC of 1.0% on most redemptions made
within one year after purchase (calculated from the last day of the month in
which the shares were purchased). The CDSC will be assessed on an amount equal
to the lesser of the current market value or the cost of the shares being
redeemed. The CDSC will not be imposed in the circumstances set forth above in
the section "Contingent Deferred Sales Charge Alternative--Class B Shares--CDSC
Waivers," except that the references to six years in the first paragraph of that
section shall mean one year in the case of Class C shares. Class C shares are
subject to an annual 12b-1 fee of up to 1.0% of the average daily net assets of
the Class. Unlike Class B shares, Class C shares have no conversion feature and,
accordingly, an investor that purchases Class C shares will be subject to 12b-1
fees applicable to Class C shares for an indefinite period subject to annual
approval by the Fund's Board of Directors and regulatory limitations.
    
 
   
NO LOAD ALTERNATIVE--CLASS D SHARES
    
 
   
    Class D shares are offered without any sales charge on purchase or
redemption and without any 12b-1 fee. Class D shares are offered only to
investors meeting an initial investment minimum of $5 million and the following
categories of investors: (i) investors participating in the InterCapital mutual
fund asset allocation program pursuant to which such persons pay an asset based
fee; (ii) persons participating in a fee-based program approved by the
Distributor, pursuant to which such persons pay an asset based fee for services
in the nature of investment advisory or administrative services (subject to all
of the terms and conditions of such programs, which may include termination fees
and restrictions on transferability of Fund shares); (iii) 401(k) plans
established by DWR and SPS Transaction Services, Inc. (an affiliate of DWR) for
their employees; (iv) certain Unit Investment Trusts sponsored by DWR; (v)
certain other open-end investment companies whose shares are distributed by the
Distributor; and (vi) other categories of investors, at the discretion of the
Board, as disclosed in the then current prospectus of the Fund. The Old Shares
have been designated Class D shares. Investors who require a $5 million minimum
initial investment to qualify to purchase Class D shares may satisfy that
requirement by investing that amount in a single transaction in Class D shares
of the Fund and other Dean Witter Multi-Class Funds, subject to the $1,000
minimum initial investment required for that Class of the Fund. In addition, for
the purpose of meeting the $5 million minimum investment amount, holdings of
Class A shares in all Dean Witter Multi-Class Funds, shares of FSC Funds and
shares of Dean Witter Funds for which such shares have been exchanged will be
included together with the current investment amount. If a shareholder redeems
Class A shares and purchases Class D shares, such redemption may be a taxable
event.
    
 
   
PLAN OF DISTRIBUTION
    
 
   
    The Fund has adopted a Plan of Distribution pursuant to Rule 12b-1 under the
Act with respect to the distribution of Class A, Class B and Class C shares of
the Fund. In the case of Class A and Class C shares, the Plan provides that the
Fund will reimburse the Distributor and others for the expenses of certain
activities and services incurred by them specifically on behalf of those shares.
    
Reimbursements for these expenses will be made in
 
                                       21
<PAGE>
   
monthly payments by the Fund to the Distributor, which will in no event exceed
amounts equal to payments at the annual rates of 0.25% and 1.0% of the average
daily net assets of Class A and Class C, respectively. In the case of Class B
shares, the Plan provides that the Fund will pay the Distributor a fee, which is
accrued daily and paid monthly, at the annual rate of 1.0% of the lesser of: (a)
the average daily aggregate gross sales of the Fund's Class B shares since the
inception of the Plan on July 2, 1984 (not including reinvestments of dividends
or capital gains distributions), less the average daily aggregate net asset
value of the Fund's Class B shares redeemed since the Plan's inception upon
which a CDSC has been imposed or waived, or (b) the average daily net assets of
Class B shares attributable to shares issued, net of related shares redeemed,
since inception of the Plan. The fee is treated by the Fund as an expense in the
year it is accrued. In the case of Class A shares, the entire amount of the fee
currently represents a service fee within the meaning of the NASD guidelines. In
the case of Class B and Class C shares, a portion of the fee payable pursuant to
the Plan, equal to 0.25% of the average daily net assets of each of these
Classes, is currently characterized as a service fee. A service fee is a payment
made for personal service and/or the maintenance of shareholder accounts.
    
 
   
    Additional amounts paid under the Plan in the case of Class B and Class C
shares are paid to the Distributor for services provided and the expenses borne
by the Distributor and others in the distribution of the shares of those
Classes, including the payment of commissions for sales of the shares of those
Classes and incentive compensation to and expenses of DWR's account executives
and others who engage in or support distribution of shares or who service
shareholder accounts, including overhead and telephone expenses; printing and
distribution of prospectuses and reports used in connection with the offering of
the Fund's shares to other than current shareholders; and preparation, printing
and distribution of sales literature and advertising materials. In addition, the
Distributor may utilize fees paid pursuant to the Plan in the case of Class B
shares to compensate DWR and other Selected Broker-Dealers for their opportunity
costs in advancing such amounts, which compensation would be in the form of a
carrying charge on any unreimbursed expenses.
    
 
   
    For the fiscal year ended February 28, 1997, Class B shares of the Fund
accrued payments under the Plan amounting to $1,910,070, which amount is equal
to 0.98% of the Fund's average daily net assets for the fiscal year. The
payments accrued under the Plan were calculated pursuant to clause (a) of the
compensation formula under the Plan. All shares held prior to July 28, 1997
(other than the Old Shares) have been designated Class B shares.
    
 
   
    In the case of Class B shares, at any given time, the expenses in
distributing Class B shares of the Fund may be in excess of the total of (i) the
payments made by the Fund pursuant to the Plan, and (ii) the proceeds of CDSCs
paid by investors upon the redemption of Class B shares. For example, if $1
million in expenses in distributing Class B shares of the Fund had been incurred
and $750,000 had been received as described in (i) and (ii) above, the excess
expense would amount to $250,000. The Distributor has advised the Fund that such
excess amounts, including the carrying charge described above, totalled
$6,803,658 at February 28, 1997, which was equal to 2.74% of the net assets of
the Fund on such date. Because there is no requirement under the Plan that the
Distributor be reimbursed for all distribution expenses or any requirement that
the Plan be continued from year to year, such excess amount does not constitute
a liability of the Fund. Although there is no legal obligation for the Fund to
pay expenses incurred in excess of payments made to the Distributor under the
Plan, and the proceeds of CDSCs paid by investors upon redemption of shares, if
for any reason the Plan is terminated the Directors will consider at that time
the manner in which to treat such expenses. Any cumulative expenses incurred,
but not yet recovered through distribution fees or CDSCs, may or may not be
recovered through future distribution fees or CDSCs.
    
 
                                       22
<PAGE>
   
    In the case of Class A and Class C shares, expenses incurred pursuant to the
Plan in any calendar year in excess of 0.25% or 1.0% of the average daily net
assets of Class A or Class C, respectively, will not be reimbursed by the Fund
through payments in any subsequent year, except that expenses representing a
gross sales commission credited to account executives at the time of sale may be
reimbursed in the subsequent calendar year. No interest or other financing
charges will be incurred on any Class A or Class C distribution expenses
incurred by the Distributor under the Plan or on any unreimbursed expenses due
to the Distributor pursuant to the Plan.
    
 
DETERMINATION OF NET ASSET VALUE
 
   
    The net asset value per share is determined once daily by at 4:00 p.m., New
York time (or, on days when the New York Stock Exchange closes prior to 4:00
p.m., at such earlier time), on each day that the New York Stock Exchange is
open by taking the net assets of the Fund, dividing by the number of shares
outstanding and adjusting to the nearest cent. The assets belonging to the Class
A, Class B, Class C and Class D shares will be invested together in a single
portfolio. The net asset value of each Class, however, will be determined
separately by subtracting each Class's accrued expenses and liabilities. The net
asset value per share will not be determined on Good Friday and on such other
federal and non-federal holidays as are are observed by the New York Stock
Exchange.
    
 
    In the calculation of the Fund's net asset value: (1) an equity portfolio
security listed or traded on the New York or American Stock Exchange or other
stock exchange is valued at its latest sale price on that exchange; if there
were no sales that day, the security is valued at the latest bid price (in cases
where a security is traded on more than one exchange, the security is valued on
the exchange designated as the primary market pursuant to procedures adopted by
the Directors), and (2) all other portfolio securities for which
over-the-counter market quotations are readily available are valued at the
latest bid price. When market quotations are not readily available, including
circumstances under which it is determined by the Investment Manager that sale
and bid prices are not reflective of a security's market value, portfolio
securities are valued at their fair value as determined in good faith under
procedures established by and under the general supervision of the Fund's
Directors.
 
    Short-term debt securities with remaining maturities of sixty days or less
are valued at amortized cost unless the Directors determine such does not
reflect the securities' market value, in which case these securities will be
valued at their fair value as determined by the Directors.
 
    Certain of the Fund's portfolio securities may be valued by an outside
pricing service approved by the Fund's Trustees. The pricing service may utilize
a matrix system incorporating security quality, maturity and coupon as the
evaluation model parameters, and/or research evaluations by its staff, including
review of broker-dealer market price quotations in determining what it believes
is the fair valuation of the portfolio securities valued by such pricing
service.
 
SHAREHOLDER SERVICES
- --------------------------------------------------------------------------------
 
   
    AUTOMATIC INVESTMENT OF DIVIDENDS AND DISTRIBUTIONS.  All income dividends
and capital gains distributions are automatically paid in full and fractional
shares of the applicable Class of the Fund (or, if specified by the shareholder,
in shares of any other open-end Dean Witter Funds), unless the shareholder
requests that they be paid in cash. Shares so acquired are acquired at net asset
value and are not subject to the imposition of a front-end sales charge or a
CDSC (see "Redemptions and Repurchases").
    
 
    INVESTMENT OF DIVIDENDS AND DISTRIBUTIONS RECEIVED IN CASH.  Any shareholder
who receives a cash payment representing a dividend or capital
 
                                       23
<PAGE>
   
gains distribution may invest such dividend or distribution in shares of the
applicable Class at the net asset value per share next determined after receipt
by the Transfer Agent by returning the check or the proceeds to the Transfer
Agent within thirty days after the payment date. Shares so acquired are acquired
at net asset value and are not subject to the imposition of a front-end sales
charge or a CDSC (see "Redemptions and Repurchases").
    
 
   
    EASYINVEST -SM-.  Shareholders may subscribe to EasyInvest, an automatic
purchase plan which provides for any amount from $100 to $5,000 to be
transferred automatically from a checking or savings account, or following
redemption of shares of a Dean Witter money market fund, on a semi-monthly,
monthly or quarterly basis, to the Transfer Agent for investment in shares of
the Fund (see "Purchase of Fund Shares" and "Redemptions and Repurchases --
Involuntary Redemption").
    
 
   
    SYSTEMATIC WITHDRAWAL PLAN.  A systematic withdrawal plan (the "Withdrawal
Plan") is available for shareholders who own or purchase shares of the Fund
having a minimum value of $10,000 based upon the then current net asset value.
The Withdrawal Plan provides for monthly or quarterly (March, June, September
and December) checks in any dollar amount, not less than $25 or in any whole
percentage of the account balance, on an annualized basis. Any applicable CDSC
will be imposed on shares redeemed under the Withdrawal Plan (see "Purchase of
Fund Shares"). Therefore, any shareholder participating in the Withdrawal Plan
will have sufficient shares redeemed from his or her account so that the
proceeds (net of any applicable CDSC) to the shareholder will be the designated
monthly or quarterly amount. Withdrawal plan payments should not be considered
as dividends, yields or income. If periodic withdrawal plan payments
continuously exceed net investment income and net capital gains, the
shareholder's original investment will be correspondingly reduced and ultimately
exhausted. Each withdrawal constitutes a redemption of shares and any gain or
loss realized must be recognized for federal income tax purposes.
    
 
    Shareholders should contact their DWR or other Selected Broker-Dealer
account executive or the Transfer Agent for further information about any of the
above services.
 
    TAX-SHELTERED RETIREMENT PLANS.  Retirement plans are available for use by
corporations, the self-employed, eligible Individual Retirement Accounts and
Custodial Accounts under Section 403(b)(7) of the Internal Revenue Code.
Adoption of such plans should be on advice of legal counsel or tax adviser.
 
    For further information regarding plan administration, custodial fees and
other details, investors should contact their account executive or the Transfer
Agent.
 
EXCHANGE PRIVILEGE
 
   
    Shares of each Class may be exchanged for shares of the same Class of any
other Dean Witter Multi-Class Fund without the imposition of any exchange fee.
Shares may also be exchanged for shares of the following funds: Dean Witter
Short-Term U.S. Treasury Trust, Dean Witter Limited Term Municipal Trust, Dean
Witter Short-Term Bond Fund, Dean Witter Intermediate Term U.S. Treasury Trust
and five Dean Witter funds which are money market funds (the "Exchange Funds").
Class A shares may also be exchanged for shares of Dean Witter Multi-State
Municipal Series Trust and Dean Witter Hawaii Municipal Trust, which are Dean
Witter Funds sold with a front-end sales charge ("FSC Funds"). Class B shares
may also be exchanged for shares of Dean Witter Global Short-Term Income Fund
Inc., Dean Witter High Income Securities and Dean Witter National Municipal
Trust, which are Dean Witter Funds offered with a CDSC ("CDSC Funds"). Exchanges
may be made after the shares of the Fund acquired by purchase (not by exchange
or dividend reinvestment) have been held for thirty days. There is no waiting
period for exchanges of shares acquired by exchange or dividend reinvestment.
    
 
   
    An exchange to another Dean Witter Multi-Class Fund, any FSC Fund, any CDSC
Fund or any Exchange Fund that is not a money market fund is on the basis of the
next calculated net asset value
    
 
                                       24
<PAGE>
   
per share of each fund after the exchange order is received. When exchanging
into a money market fund from the Fund, shares of the Fund are redeemed out of
the Fund at their next calculated net asset value and the proceeds of the
redemption are used to purchase shares of the money market fund at their net
asset value determined the following business day. Subsequent exchanges between
any of the money market funds and any of the Dean Witter Multi-Class Funds, FSC
Funds or CDSC Funds or any Exchange Fund that is not a money market fund can be
effected on the same basis.
    
 
   
    No CDSC is imposed at the time of any exchange of shares, although any
applicable CDSC will be imposed upon ultimate redemption. During the period of
time the shareholder remains in an Exchange Fund (calculated from the last day
of the month in which the shares were acquired), the holding period (for the
purpose of determining the rate of the CDSC) is frozen. If those shares are
subsequently re-exchanged for shares of a Dean Witter Multi-Class Fund or shares
of a CDSC Fund, the holding period previously frozen when the first exchange was
made resumes on the last day of the month in which shares of a Dean Witter
Multi-Class Fund or shares of a CDSC Fund are reacquired. Thus, the CDSC is
based upon the time (calculated as described above) the shareholder was invested
in shares of a Dean Witter Multi-Class Fund or in shares of a CDSC Fund (see
"Purchase of Fund Shares"). In the case of exchanges of Class A shares which are
subject to a CDSC, the holding period also includes the time (calculated as
described above) the shareholder was invested in shares of a FSC Fund. However,
in the case of shares exchanged into an Exchange Fund on or after April 23,
1990, upon a redemption of shares which results in a CDSC being imposed, a
credit (not to exceed the amount of the CDSC) will be given in an amount equal
to the Exchange Fund 12b-1 distribution fees incurred on or after that date
which are attributable to those shares. (Exchange Fund 12b-1 distribution fees,
if any, are described in the prospectus for those funds.) Class B shares of the
Fund acquired in exchange for Class B shares of another Dean Witter Multi-Class
Fund or shares of a CDSC Fund having a different CDSC schedule than that of this
Fund will be subject to the higher CDSC schedule, even if such shares are
subsequently re-exchanged for shares of the fund with the lower CDSC schedule.
    
 
   
    ADDITIONAL INFORMATION REGARDING EXCHANGES. Purchases and exchanges should
be made for investment purposes only. A pattern of frequent exchanges may be
deemed by the Investment Manager to be abusive and contrary to the best
interests of the Fund's other shareholders and, at the Investment Manager's
discretion, may be limited by the Fund's refusal to accept additional purchases
and/ or exchanges from the investor. Although the Fund does not have any
specific definition of what constitutes a pattern of frequent exchanges, and
will consider all relevant factors in determining whether a particular situation
is abusive and contrary to the best interests of the Fund and its other
shareholders, investors should be aware that the Fund and each of the other Dean
Witter Funds may in their discretion limit or otherwise restrict the number of
times this Exchange Privilege may be exercised by any investor. Any such
restriction will be made by the Fund on a prospective basis only, upon notice to
the shareholder not later than ten days following such shareholder's most recent
exchange.
    
 
    Also, the Exchange Privilege may be terminated or revised at any time by the
Fund and/or any of such Dean Witter Funds for which shares of the Fund may be
exchanged, upon such notice as may be required by applicable regulatory
agencies. Shareholders maintaining margin accounts with DWR or another Selected
Broker-Dealer are referred to their account executive regarding restrictions on
exchange of shares of the Fund pledged in the margin account.
 
   
    The current prospectus for each fund describes its investment objective(s)
and policies, and shareholders should obtain one and examine it carefully before
investing. Exchanges are subject to the minimum investment requirement of each
Class of shares and any other conditions imposed by each fund. In the case of
any shareholder holding a share
    
 
                                       25
<PAGE>
   
certificate or certificates, no exchanges may be made until all applicable share
certificate(s) have been received by the Transfer Agent and deposited in the
shareholder's account. An exchange will be treated for federal income tax
purposes the same as a repurchase or redemption of shares, on which the
shareholder may realize a capital gain or loss. However, the ability to deduct
capital losses on an exchange may be limited in situations where there is an
exchange of shares within ninety days after the shares are purchased. The
Exchange Privilege is only available in states where an exchange may legally be
made.
    
 
    If DWR or another other Selected Broker-Dealer is the current dealer of
record and its account numbers are part of the account information, shareholders
may initiate an exchange of shares of the Fund for shares of any of the Dean
Witter Funds (for which the Exchange Privilege is available) pursuant to this
Exchange Privilege by contacting their DWR or other Selected Broker-Dealer
account executive (no Exchange Privilege Authorization Form is required). Other
shareholders (and those shareholders who are clients of DWR or another Selected
Broker-Dealer but who wish to make exchanges directly by writing or telephoning
the Transfer Agent) must complete and forward to the Transfer Agent an Exchange
Privilege Authorization Form, copies of which may be obtained from the Transfer
Agent, to initiate an exchange. If the Authorization Form is used, exchanges may
be made by contacting the Transfer Agent at (800) 869-NEWS (toll-free).
 
    The Fund will employ reasonable procedures to confirm that exchange
instructions communicated over the telephone are genuine. Such procedures
include requiring various forms of personal identification such as name, mailing
address, social security or other tax identification number and DWR or other
Selected Broker-Dealer account number (if any). Telephone instructions will also
be recorded. If such procedures are not employed, the Fund may be liable for any
losses due to unauthorized or fraudulent instructions.
 
    Telephone exchange instructions will be accepted if received by the Transfer
Agent between 9:00 a.m. and 4:00 p.m. New York time, on any day the New York
Stock Exchange is open. Any shareholder wishing to make an exchange who has
previously filed an Exchange Privilege Authorization Form and who is unable to
reach the Fund by telephone should contact his or her DWR or other Selected
Broker-Dealer account executive, if appropriate, or make a written exchange
request. Shareholders are advised that during periods of drastic economic or
market changes, it is possible that the telephone exchange procedures may be
difficult to implement, although this has not been the case with the Dean Witter
Funds in the past.
 
    Shareholders should contact their DWR or other Selected Broker-Dealer
account executive or the Transfer Agent for further information about the
Exchange Privilege.
 
REDEMPTIONS AND REPURCHASES
- --------------------------------------------------------------------------------
 
   
    REDEMPTION.  Shares of each Class of the Fund can be redeemed for cash at
any time at net asset value per share next determined less the amount of any
applicable CDSC in the case of Class A, Class B or Class C shares (see "Purchase
of Fund Shares"). If shares are held in a shareholder's account without a stock
certificate, a written request for redemption to the Fund's Transfer Agent at P.
O. Box 983, Jersey City, New Jersey 07303 is required. If certificates are held
by the shareholder, the shares may be redeemed by surrendering the certificates
with a written request for redemption along with any additional information
required by the Transfer Agent.
    
 
    REPURCHASE.  DWR and other Selected Broker-Dealers are authorized to
repurchase shares represented by a stock certificate which is delivered to any
of their offices. Shares held in a shareholder's account without a stock
certificate may also be repurchased by DWR and other Selected Broker-Dealers
upon the telephonic request of the share
 
                                       26
<PAGE>
holder. The repurchase price is the net asset value per share, next determined
(see "Purchase of Fund Shares") after such repurchase order is received by DWR
or other Selected Broker-Dealer, reduced by any applicable CDSC.
 
   
    The CDSC, if any, will be the only fee imposed by the Fund or the
Distributor. The offers by DWR and other Selected Broker-Dealers to repurchase
shares may be suspended without notice by them at any time. In that event,
shareholders may redeem their shares through the Fund's Transfer Agent as set
forth above under "Redemption."
    
 
    PAYMENT FOR SHARES REDEEMED OR REPURCHASED.  Payment for shares presented
for repurchase or redemption will be made by check within seven days after
receipt by the Transfer Agent of the certificate and/or written request in good
order. Such payment may be postponed or the right of redemption suspended under
unusual circumstances, e.g. when normal trading is not taking place on the New
York Stock Exchange. If the shares to be redeemed have recently been purchased
by check, payment of the redemption proceeds may be delayed for the minimum time
needed to verify that the check used for investment has been honored (not more
than fifteen days from the time of receipt of the check by the Transfer Agent).
Shareholders maintaining margin accounts with DWR or another Selected
Broker-Dealer are referred to their account executive regarding restrictions on
redemption of shares of the Fund pledged in the margin account.
 
   
    REINSTATEMENT PRIVILEGE.  A shareholder who has had his or her shares
redeemed or repurchased and has not previously exercised this reinstatement
privilege may, within 35 days after the date of the redemption or repurchase,
reinstate any portion or all of the proceeds of such redemption or repurchase in
shares of the Fund in the same Class from which such shares were redeemed or
repurchased, at their net asset value next determined after a reinstatement
request, together with proceeds, is received by the Transfer Agent and receive a
pro rata credit for any CDSC paid in connection with such redemption or
repurchase.
    
 
   
    INVOLUNTARY REDEMPTION.  The Fund reserves the right, on sixty days' notice,
to redeem, at their net asset value, the shares of any shareholder (other than
shares held in an Individual Retirement Account or Custodial Account under
Section 403(b)(7) of the Internal Revenue Code) whose shares due to redemptions
by the shareholder have a value of less than $100, or such lesser amount as may
be fixed by the Fund's Board of Directors or, in the case of an account opened
through EasyInvest, if after twelve months the shareholder has invested less
than $1,000 in the account. However, before the Fund redeems such shares and
sends the proceeds to the shareholder, it will notify the shareholder that the
value of the shares is less than the applicable amount and allow the shareholder
sixty days to make an additional investment in an amount which will increase the
value of the account to at least the applicable amount before the redemption is
processed. No CDSC will be imposed on any involuntary redemption.
    
 
DIVIDENDS, DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------
 
   
    DIVIDENDS AND DISTRIBUTIONS.  The Fund declares dividends separately for
each Class of shares and intends to pay dividends and to distribute
substantially all of the Fund's net investment income and net short-term capital
gains, if any, at least once each year. The Fund may, however, determine either
to distribute or to retain all or part of any net long-term capital gains in any
year for reinvestment.
    
   
    All dividends and any capital gains distributions will be paid in additional
shares of the same Class and will be automatically credited to the shareholder's
account without issuance of a stock certificate unless the shareholder requests
in writing that
    
 
                                       27
<PAGE>
   
all dividends be paid in cash. Shares acquired by dividend and distribution
reinvestments will not be subject to any front-end sales charge or CDSC. Class B
shares acquired through dividend and distribution reinvestments will become
eligible for conversion to Class A shares on a pro rata basis. Distributions
paid on Class A and Class D shares will be higher than for Class B and Class C
shares because distribution fees paid by Class B and Class C shares are higher.
    
 
   
    TAXES.  Because the Fund intends to distribute all of its net investment
income and net short-term capital gains to shareholders and otherwise remain
qualified as a regulated investment company under Subchapter M of the Internal
Revenue Code of 1986, it is not expected that the Fund will be required to pay
any federal income tax on such income and capital gains. Shareholders who are
required to pay taxes on their income will normally have to pay Federal income
taxes, and any state income taxes and/or local income taxes, on the dividends
and distributions they receive from the Fund. Such dividends and distributions,
to the extent that they are derived from net investment income or net short-term
capital gains, are taxable to the shareholder as ordinary dividend income
regardless of whether the shareholder receives such distributions in additional
shares or in cash. Any dividends declared in the last quarter of any calendar
year which are paid in the following year prior to February 1 will be deemed,
for tax purposes, to have been received by the shareholder in the prior year.
    
 
    As a regulated investment company, the Fund is subject to the requirements
that less than 30% of the Fund's gross income be derived from gains from the
sale or other disposition of securities held for less than three months. This
requirement may limit the Fund's ability to engage in options and futures
transactions.
 
    The Fund may at times make payments from sources other than income or net
capital gains. Payments from such sources will, in effect, represent a return of
a portion of each shareholder's investment. All, or a portion, of such payments
will not be taxable to shareholders.
 
    After the end of the calendar year, shareholders will receive full
information on their dividends and capital gains distributions for tax purposes.
To avoid being subject to a 31% Federal backup withholding tax on taxable
dividends, capital gains distributions and the proceeds of redemptions and
repurchases, shareholders' taxpayer identification numbers must be furnished and
certified as to their accuracy.
 
    Distributions of net long-term capital gains, if any, are taxable to
shareholders as long-term capital gains regardless of how long a shareholder has
held the Fund's shares and regardless of whether the distribution is received in
additional shares or in cash. Capital gains distributions are not eligible for
the dividends received deduction.
 
    Shareholders should consult their tax advisers as to the applicability of
the foregoing to their current situation.
 
PERFORMANCE INFORMATION
- --------------------------------------------------------------------------------
 
   
    From time to time the Fund may quote its "total return" in advertisements
and sales literature. These figures are computed separately for Class A, Class
B, Class C and Class D shares. The total return of the Fund is based on
historical earnings and is not intended to indicate future performance. The
"average annual total return" of the Fund refers to a figure reflecting the
average annualized percentage increase (or decrease) in the value of an initial
investment in a Class of the Fund of $1,000 over periods of one, five and ten
years. Average annual total return reflects all income earned by the Fund, any
appreciation or depreciation of the Fund's assets, all expenses incurred by the
applicable Class and all sales charges which would be incurred by shareholders,
for the stated periods. It also assumes reinvestment of all dividends and
distributions paid by the Fund.
    
 
   
    In addition to the foregoing, the Fund may advertise its total return for
each Class over different periods of time by means of aggregate, average,
year-by-year or other types of total return figures. Such calculations may or
may not reflect the
    
deduc-
 
                                       28
<PAGE>
   
tion of any sales charge which, if reflected, would reduce the performance
quoted. The Fund may also advertise the growth of hypothetical investments of
$10,000, $50,000 and $100,000 in each class of shares of the Fund. The Fund from
time to time may also advertise its performance relative to certain performance
rankings and indexes compiled by independent organizations (such as mutual fund
performance rankings of Lipper Analytical Services, Inc.).
    
 
ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------
 
   
    VOTING RIGHTS.  All shares of common stock of the Fund are of $0.01 par
value and are equal as to earnings, assets and voting privileges except that
each Class will have exclusive voting privileges with respect to matters
relating to distribution expenses borne solely by such Class or any other matter
in which the interests of one Class differ from the interests of any other
Class. In addition, Class B shareholders will have the right to vote on any
proposed material increase in Class A's expenses, if such proposal is submitted
separately to Class A shareholders. Also, as discussed herein, Class A, Class B
and Class C bear the expenses related to the distribution of their respective
shares. There are no conversion, pre-emptive or other subscription rights. In
the event of liquidation, each share of common stock of the Fund is entitled to
its portion of all of the Fund's assets after all debts and expenses have been
paid. The shares do not have cumulative voting rights.
    
 
    Under ordinary circumstances, the Fund is not required, nor does it intend,
to hold Annual Meetings of Stockholders. The Directors may call Special Meetings
of Stockholders for action by stockholder vote as may be required by the Act or
the Fund's By-Laws.
 
   
    CODE OF ETHICS.  Directors, officers and employees of InterCapital, Dean
Witter Services Company Inc. and the Distributor are subject to a strict Code of
Ethics adopted by those companies. The Code of Ethics is intended to ensure that
the interests of shareholders and other clients are placed ahead of any personal
interest, that no undue personal benefit is obtained from a person's employment
activities and that actual and potential conflicts of interest are avoided. To
achieve these goals and comply with regulatory requirements, the Code of Ethics
requires, among other things, that personal securities transactions by employees
of the companies be subject to an advance clearance process to monitor that no
Dean Witter Fund is engaged at the same time in a purchase or sale of the same
security. The Code of Ethics bans the purchase of securities in an initial
public offering, and also prohibits engaging in futures and options transactions
and profiting on short-term trading (that is, a purchase within sixty days of a
sale or a sale within sixty days of a purchase) of a security. In addition,
investment personnel may not purchase or sell a security for their personal
account within thirty days before or after any transaction in any Dean Witter
Fund managed by them. Any violations of the Code of Ethics are subject to
sanctions, including reprimand, demotion or suspension or termination of
employment. The Code of Ethics comports with regulatory requirements and the
recommendations in the 1994 report by the Investment Company Institute Advisory
Group on Personal Investing.
    
 
   
    MASTER/FEEDER CONVERSION.  The Fund reserves the right to seek to achieve
its investment objective by investing all of its investable assets in a
diversified, open-end management investment company having the same investment
objective and policies and substantially the same investment restrictions as
those applicable to the Fund.
    
 
    SHAREHOLDER INQUIRIES.  All inquiries regarding the Fund should be directed
to the Fund at the telephone numbers or address set forth on the front cover of
 
this Prospectus.
 
                                       29
<PAGE>
 
   
Dean Witter
Natural Resource Development
Securities Inc.
                                    DEAN WITTER
Two World Trade Center
New York, New York 10048
BOARD OF DIRECTORS                  NATURAL RESOURCE
Michael Bozic                       DEVELOPMENT
Charles A. Fiumefreddo              SECURITIES
Edwin J. Garn
John R. Haire
Dr. Manuel H. Johnson
Michael E. Nugent
Philip J. Purcell
John L. Schroeder
OFFICERS
Charles A. Fiumefreddo
Chairman and Chief Executive
Officer
Barry Fink
Vice President, Secretary and
General Counsel
David F. Myers
Vice President
Catherine Maniscalco
Vice President
Thomas F. Caloia
Treasurer
CUSTODIAN
The Bank of New York
90 Washington Street
New York, New York 10286
TRANSFER AGENT AND DIVIDEND
DISBURSING AGENT
Dean Witter Trust Company
Harborside Financial Center
Plaza Two
Jersey City, New Jersey 07311
INDEPENDENT ACCOUNTANTS
Price Waterhouse LLP
1177 Avenue of the Americas
New York, New York 10036
INVESTMENT MANAGER
Dean Witter InterCapital Inc.
 
                                            PROSPECTUS -- JULY 28, 1997
 
    
<PAGE>
 
   
STATEMENT OF ADDITIONAL INFORMATION       Dean Witter
JULY 28, 1997                             Natural Resource
                                          Development
                                          Securities
 
- --------------------------------------------------------------------------------
    
 
    Dean Witter Natural Resource Development Securities Inc. (the "Fund") is an
open-end, diversified management investment company whose investment objective
is capital growth. The Fund invests primarily in common stock of companies in
the natural resources and related areas, including companies engaged in the
exploration for and development, production and distribution of natural
resources or in the development of energy-efficient technologies or other
natural resource related supplies or products. (See "Investment Practices and
Policies.")
 
   
    A Prospectus for the Fund dated July 28, 1997, which provides the basic
information you should know before investing in the Fund, may be obtained
without charge from the Fund at the address or telephone numbers listed below or
from the Fund's Distributor, Dean Witter Distributors Inc., or from Dean Witter
Reynolds Inc., at any of its branch offices. This Statement of Additional
Information is not a Prospectus. It contains information in addition to and more
detailed than that set forth in the Prospectus. It is intended to provide
additional information regarding the activities and operations of the Fund, and
should be read in conjunction with the Prospectus.
    
 
Dean Witter Natural Resource Development Securities Inc.
Two World Trade Center
New York, New York 10048
(212) 392-2550 or
(800) 869-NEWS (toll-free)
<PAGE>
TABLE OF CONTENTS
- --------------------------------------------------------------------------------
 
   
<TABLE>
<S>                                                                                           <C>
The Fund and its Management.................................................................          3
Directors and Officers......................................................................          6
Investment Practices and Policies...........................................................         11
Investment Restrictions.....................................................................         23
Portfolio Transactions and Brokerage........................................................         24
The Distributor.............................................................................         26
Determination of Net Asset Value............................................................         30
Purchase of Fund Shares.....................................................................         30
Shareholder Services........................................................................         32
Redemptions and Repurchases.................................................................         37
Dividends, Distributions and Taxes..........................................................         38
Performance Information.....................................................................         39
Shares of the Fund..........................................................................         40
Custodian and Transfer Agent................................................................         41
Independent Accountants.....................................................................         41
Reports to Shareholders.....................................................................         41
Legal Counsel...............................................................................         41
Experts.....................................................................................         41
Registration Statement......................................................................         41
Report of Independent Accountants...........................................................         42
Financial Statements--February 28, 1997.....................................................         43
</TABLE>
    
 
                                       2
<PAGE>
THE FUND AND ITS MANAGEMENT
- --------------------------------------------------------------------------------
 
THE FUND
 
    The Fund was incorporated in the State of Maryland on December 22, 1980
under the name InterCapital Natural Resource Development Securities Inc. On
March 16, 1983 the Fund's shareholders approved a change in the Fund's name,
effective March 21, 1983, to Dean Witter Natural Resource Development Securities
Inc.
 
THE INVESTMENT MANAGER
 
   
    Dean Witter InterCapital Inc. (the "Investment Manager" or "InterCapital"),
a Delaware corporation, whose address is Two World Trade Center, New York, New
York 10048, is the Fund's Investment Manager. InterCapital is a wholly-owned
subsidiary of Morgan Stanley, Dean Witter, Discover & Co. ("MSDWD"), a Delaware
corporation. In an internal reorganization which took place in January, 1993,
InterCapital assumed the investment advisory, administrative and management
activities previously performed by the InterCapital Division of Dean Witter
Reynolds Inc. ("DWR"), a broker-dealer affiliate of InterCapital. (As
hereinafter used in this Statement of Additional Information, the terms
"InterCapital" and "Investment Manager" refer to DWR's InterCapital Division
prior to the internal reorganization and to Dean Witter InterCapital Inc.
thereafter.) The daily management of the Fund and research relating to the
Fund's portfolio is conducted by or under the direction of officers of the Fund
and of the Investment Manager, subject to review by the Fund's Board of
Directors. Information as to these Directors and Officers is contained under the
caption "Directors and Officers."
    
 
   
    InterCapital is also the investment manager or investment adviser of the
following investment companies: Dean Witter Liquid Asset Fund Inc., InterCapital
Income Securities Inc., InterCapital Insured Municipal Bond Trust, InterCapital
Insured Municipal Trust, Dean Witter High Yield Securities Inc., Dean Witter
Tax-Free Daily Income Trust, Dean Witter Developing Growth Securities Trust,
Dean Witter Tax-Exempt Securities Trust, Dean Witter Dividend Growth Securities
Inc., Dean Witter American Value Fund, Dean Witter U.S. Government Money Market
Trust, Dean Witter Variable Investment Series, Dean Witter World Wide Investment
Trust, Dean Witter Select Municipal Reinvestment Fund, Dean Witter U.S.
Government Securities Trust, Dean Witter California Tax-Free Income Fund, Dean
Witter New York Tax-Free Income Fund, Dean Witter Convertible Securities Trust,
Dean Witter Federal Securities Trust, Dean Witter Value-Added Market Series,
High Income Advantage Trust, High Income Advantage Trust II, High Income
Advantage Trust III, Dean Witter Government Income Trust, Dean Witter Utilities
Fund, Dean Witter California Tax-Free Daily Income Trust, Dean Witter Strategist
Fund, Dean Witter World Wide Income Trust, Dean Witter Intermediate Income
Securities, Dean Witter New York Municipal Money Market Trust, Dean Witter
Capital Growth Securities, Dean Witter European Growth Fund Inc., Dean Witter
Precious Metals and Minerals Trust, Dean Witter Global Short-Term Income Fund
Inc., Dean Witter Pacific Growth Fund Inc., Dean Witter Multi-State Municipal
Series Trust, Dean Witter Short-Term U.S. Treasury Trust, Dean Witter
Diversified Income Trust, InterCapital Quality Municipal Investment Trust,
InterCapital Quality Municipal Income Trust, Dean Witter Retirement Series, Dean
Witter Health Sciences Trust, InterCapital Insured Municipal Income Trust,
InterCapital California Insured Municipal Income Trust, Dean Witter Global
Dividend Growth Securities, Dean Witter Limited Term Municipal Trust, Dean
Witter Short-Term Bond Fund, InterCapital Quality Municipal Securities,
InterCapital California Quality Municipal Securities, InterCapital New York
Quality Municipal Securities, InterCapital Insured Municipal Securities,
InterCapital Insured California Municipal Securities, Dean Witter Global
Utilities Fund, Dean Witter National Municipal Trust, Dean Witter High Income
Securities, Dean Witter International SmallCap Fund, Dean Witter Mid-Cap Growth
Fund, Dean Witter Select Dimensions Series, Dean Witter Global Asset Allocation
Fund, Dean Witter Balanced Income Fund, Dean Witter Balanced Growth Fund, Dean
Witter Hawaii Municipal Trust, Dean Witter Capital Appreciation Fund, Dean
Witter Information Fund, Dean Witter Intermediate Term U.S. Treasury Trust, Dean
Witter Japan Fund, Dean Witter Income Builder Fund, Dean Witter Financial
Services Trust, Dean Witter Market Leader Trust, Dean Witter Special Value Fund,
Active Assets Money Trust, Active Assets Tax-Free Trust, Active Assets
California Tax-Free Trust, Active Assets Government Securities Trust, Municipal
Income Trust, Municipal Income Trust II, Municipal Income Trust III, Municipal
Income Opportunities Trust, Municipal Income Opportunities Trust II, Municipal
Income Opportunities Trust III, Prime Income Trust
    
 
                                       3
<PAGE>
   
and Municipal Premium Income Trust. The foregoing investment companies, together
with the Fund, are collectively referred to as the Dean Witter Funds. In
addition, Dean Witter Services Company Inc. ("DWSC"), a wholly-owned subsidiary
of InterCapital, serves as manager for the following investment companies, for
which TCW Funds Management Inc. is the investment adviser: TCW/DW Core Equity
Trust, TCW/DW North American Government Income Trust, TCW/DW Latin American
Growth Fund, TCW/DW Income and Growth Fund, TCW/DW Small Cap Growth Fund, TCW/DW
Balanced Fund, TCW/DW Total Return Trust, TCW/DW Mid-Cap Equity Trust, TCW/DW
Global Telecom Trust, TCW/DW Strategic Income Trust, TCW/DW Term Trust 2000,
TCW/DW Term Trust 2002, TCW/DW Term Trust 2003 and TCW/DW Emerging Markets
Opportunities Trust (the "TCW/DW Funds"). InterCapital also serves as (i)
administrator of The Black Rock Strategic Term Trust Inc., a closed-end
investment company; and (ii) sub-administrator of Mass Mutual Participation
Investors and Templeton Global Governments Income Trust, closed-end investment
companies.
    
 
    Pursuant to an Investment Management Agreement (the "Agreement") with the
Investment Manager, the Fund has retained the Investment Manager to manage the
investment of the Fund's assets, including the placing of orders for the
purchase and sale of portfolio securities. The Investment Manager obtains and
evaluates such information and advice relating to the economy, securities
markets, and specific securities as it considers necessary or useful to
continuously manage the assets of the Fund in a manner consistent with its
investment objective and policies.
 
    Under the terms of the Agreement, in addition to managing the Fund's
investments, the Investment Manager maintains certain of the Fund's books and
records and furnishes, at its own expense, such office space, facilities,
equipment, clerical help, bookkeeping and certain legal services as the Fund may
reasonably require in the conduct of its business, including the preparation of
prospectuses, proxy statements and reports required to be filed with federal and
state securities commissions (except insofar as the participation or assistance
of independent accountants and attorneys is, in the opinion of the Investment
Manager, necessary or desirable). In addition, the Investment Manager pays the
salaries of all personnel, including officers of the Fund, who are employees of
the Investment Manager. The Investment Manager also bears the cost of telephone
service, heat, light, power and other utilities provided to the Fund.
 
    Effective December 31, 1993, pursuant to a Services Agreement between
InterCapital and DWSC, DWSC began to provide the administrative services to the
Fund which were previously performed directly by InterCapital. On April 17,
1995, DWSC was reorganized in the State of Delaware, necessitating the entry
into a new Services Agreement between InterCapital and DWSC on that date. The
foregoing internal reorganizations did not result in any change in the nature or
scope of the administrative services being provided to the Fund or any of the
fees being paid by the Fund for the overall services being performed under the
terms of the existing Agreement.
 
   
    Expenses not expressly assumed by the Investment Manager under the Agreement
or by the Distributor of the Fund's shares Dean Witter Distributors Inc.
("Distributors" or the "Distributor") (see "The Distributor") will be paid by
the Fund. These expenses will be allocated among the four classes of shares of
the Fund (each, a "Class") pro rata based on the net assets of the Fund
attributable to each Class, except as described below. The expenses borne by the
Fund include, but are not limited to: expenses of the Plan of Distribution
pursuant to Rule 12b-1 (the "12b-1 fee") (see "The Distributor"); charges and
expenses of any registrar, custodian, stock transfer and dividend disbursing
agent; brokerage commissions; taxes; engraving and printing stock certificates;
registration costs of the Fund and its shares under federal and state securities
laws; the cost and expense of printing, including typesetting, and distributing
Prospectuses and Statements of Additional Information of the Fund and
supplements thereto to the Fund's shareholders; all expenses of shareholders'
and Directors' meetings and of preparing, printing and mailing of proxy
statements and reports to shareholders; fees and travel expenses of Directors or
members of any advisory board or committee who are not employees of the
Investment Manager or any corporate affiliate of the Investment Manager; all
expenses incident to any dividend, withdrawal or redemption options; charges and
expenses of any outside service used for pricing of the Fund's shares; fees and
expenses of legal counsel, including counsel to the Directors who are not
interested persons of the Fund or of the Investment Manager (not including
compensation or expenses of attorneys who are employees of the Investment
Manager) and independent accountants; membership dues of industry associations;
interest on Fund borrowings; postage; insurance premiums on property or
personnel
    
 
                                       4
<PAGE>
   
(including officers and Directors) of the Fund which inure to its benefit;
extraordinary expenses (including, but not limited to, legal claims and
liabilities and litigation costs and any indemnification relating thereto); and
all other costs of the Fund's operation. The 12b-1 fees relating to a particular
Class will be allocated directly to that Class. In addition, other expenses
associated with a particular Class (except advisory or custodial fees) may be
allocated directly to that Class, provided that such expenses are reasonably
identified as specifically attributable to that Class and the direct allocation
to that Class is approved by the Directors.
    
 
    As full compensation for the services and facilities furnished to the Fund
and expenses of the Fund assumed by the Investment Manager, the Fund pays the
Investment Manager monthly compensation calculated daily by applying the
following annual rates to the net assets of the Fund determined as of the close
of each business day: 0.625% of the portion of the daily net assets not
exceeding $250 million and 0.50% of the portion of the daily net assets
exceeding $250 million. For the fiscal years ended February 28, 1995, February
29, 1996 and February 28, 1997, the Fund accrued to the Investment Manager total
compensation under the Agreement in the amounts of $886,340, $883,804 and
$1,221,826, respectively.
 
    The Agreement provides that in the absence of willful misfeasance, bad
faith, gross negligence or reckless disregard of its obligations thereunder, the
Investment Manager is not liable to the Fund or any of its investors for any act
or omission by the Investment Manager or for any losses sustained by the Fund or
its investors. The Agreement in no way restricts the Investment Manager from
acting as investment manager or adviser to others.
 
   
    The Agreement was initially approved by the Directors on February 21, 1997
and by the shareholders of the Fund at a Special Meeting of Shareholders on May
21, 1997. The Agreement is substantially identical to a prior investment
management agreement which was initially approved by the Directors on October
30, 1992 and by the shareholders of the Fund at a Meeting of Shareholders held
on January 12, 1993. The Agreement took effect on May 31, 1997 upon the
consummation of the merger of Dean Witter, Discover & Co. with Morgan Stanley
Group Inc. The Agreement may be terminated at any time, without penalty, on
thirty days' notice by the Board of Directors of the Fund, by the holders of a
majority, as defined in the Investment Company Act of 1940, as amended (the
"Act"), of the outstanding shares of the Fund, or by the Investment Manager. The
Agreement will automatically terminate in the event of its assignment (as
defined in the Act).
    
 
   
    Under its terms, the Agreement has an initial term ending April 30, 1999 and
will continue from year to year thereafter, provided continuance of the
Agreement is approved at least annually by the vote of the holders of a
majority, as defined in the Act, of the outstanding shares of the Fund, or by
the Board of Directors of the Fund; provided that in either event such
continuance is approved annually by the vote of a majority of the Directors of
the Fund who are not parties to the Agreement or "interested persons" (as
defined in the Act) of any such party, which vote must be cast in person at a
meeting called for the purpose of voting on such approval.
    
 
   
    The Fund has acknowledged that the name "Dean Witter" is a property right of
DWR. The Fund has agreed that DWR or its parent company may use or, at any time,
permit others to use, the name "Dean Witter." The Fund has also agreed that in
the event the Agreement is terminated, or if the affiliation between
InterCapital and its parent company is terminated, the Fund will eliminate the
name "Dean Witter" from its name if DWR or its parent company shall so request.
    
 
                                       5
<PAGE>
DIRECTORS AND OFFICERS
- --------------------------------------------------------------------------------
 
   
    The Directors and Executive Officers of the Fund, their principal business
occupations during the last five years and their affiliations, if any, with
InterCapital and with the 83 Dean Witter Funds and the 14 TCW/DW Funds are shown
below.
    
 
   
<TABLE>
<CAPTION>
       NAME, AGE, POSITION WITH FUND
                AND ADDRESS                                 PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- -------------------------------------------  ---------------------------------------------------------------------------
<S>                                          <C>
 
Michael Bozic (56)                           Chairman and Chief Executive Officer of Levitz Furniture Corporation (since
Director                                     November, 1995); Director or Trustee of the Dean Witter Funds; formerly
c/o Levitz Furniture Corporation             President and Chief Executive Officer of Hills Department Stores (May,
6111 Broken Sound Parkway, N.W.              1991-July, 1995); formerly variously Chairman, Chief Executive Officer,
Boca Raton, Florida                          President and Chief Operating Officer (1987-1991) of the Sears Merchandise
                                             Group of Sears, Roebuck and Co.; Director of Eaglemark Financial Services,
                                             Inc., the United Negro College Fund and Weirton Steel Corporation.
 
Charles A. Fiumefreddo* (64)                 Chairman, Chief Executive Officer and Director of InterCapital,
Chairman, Director,                          Distributors and DWSC; Executive Vice President and Director of DWR;
President and Chief                          Chairman, Trustee or Director, President and Chief Executive Officer of the
Executive Officer                            Dean Witter Funds; Chairman, Chief Executive Officer and Trustee of the
Two World Trade Center                       TCW/DW Funds; Chairman and Director of Dean Witter Trust Company ("DWTC");
New York, New York                           formerly Executive Vice President and Director of Dean Witter, Discover &
                                             Co. (until February, 1993); Director and/or officer of various MSDWD
                                             subsidiaries.
 
Edwin J. Garn (64)                           Director or Trustee of the Dean Witter Funds; formerly United States
Director                                     Senator (R-Utah) (1974-1992) and Chairman, Senate Banking Committee
c/o Huntsman Corporation                     (1980-1986); formerly Mayor of Salt Lake City, Utah (1971-1974); formerly
500 Huntsman Way                             Astronaut, Space Shuttle Discovery (April 12-19, 1985); Vice Chairman,
Salt Lake City, Utah                         Huntsman Corporation (since January, 1993); Director of Franklin Quest
                                             (time management systems) and John Alden Financial Corp. (health
                                             insurance); member of the board of various civic and charitable
                                             organizations.
 
John R. Haire (72)                           Chairman of the Audit Committee and Chairman of the Committee of the
Director                                     Independent Directors or Trustees and Director or Trustee of the Dean
Two World Trade Center                       Witter Funds; Chairman of the Audit Committee and Chairman of the Committee
New York, New York                           of the Independent Trustees and Trustee of the TCW/DW Funds; formerly
                                             President, Council for Aid to Education (1978-1989) and formerly Chairman
                                             and Chief Executive Officer of Anchor Corporation, an Investment Adviser
                                             (1964-1978); Director of Washington National Corporation (insurance).
 
Wayne E. Hedien** (63)                       Retired; Director or Trustee of the Dean Witter Funds (commencing on
Director                                     September 1, 1997); Director of The PMI Group, Inc. (private mortgage
c/o Gordon Altman Butowsky                   insurance); Trustee and Vice Chairman of The Field Museum of Natural
 Weitzen Shalov & Wein                       History; formerly associated with the Allstate Companies (1966-1994), most
Counsel to the Independent                   recently as Chairman of The Allstate Corporation (March, 1993-December,
 Directors                                   1994) and Chairman and Chief Executive Officer of its wholly-owned
114 West 47th Street                         subsidiary, Allstate Insurance Company (July, 1989-December, 1994);
New York, New York                           director of various other business and charitable organizations.
</TABLE>
    
 
                                       6
<PAGE>
   
<TABLE>
<CAPTION>
       NAME, AGE, POSITION WITH FUND
                AND ADDRESS                                 PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- -------------------------------------------  ---------------------------------------------------------------------------
<S>                                          <C>
Dr. Manuel H. Johnson (48)                   Senior Partner, Johnson Smick International, Inc., a consulting firm;
Director                                     Co-Chairman and a founder of the Group of Seven Council (G7C), an
c/o Johnson Smick International, Inc.        international economic commission; Director or Trustee of the Dean Witter
1133 Connecticut Avenue, N.W.                Funds; Trustee of the TCW/DW Funds; Director of NASDAQ (since June, 1995);
Washington, D.C.                             Director of Greenwich Capital Markets Inc. (broker-dealer); Trustee of the
                                             Financial Accounting Foundation (oversight organization for the Financial
                                             Accounting Standards Board); formerly Vice Chairman of the Board of
                                             Governors of the Federal Reserve System (1986-1990) and Assistant Secretary
                                             of the U.S. Treasury (1982-1986).
 
Michael E. Nugent (61)                       General Partner, Triumph Capital, L.P., a private investment partnership;
Director                                     Director or Trustee of the Dean Witter Funds; Trustee of the TCW/DW Funds;
c/o Triumph Capital, L.P.                    formerly Vice President, Bankers Trust Company and BT Capital Corporation
237 Park Avenue                              (1984-1988); director of various business organizations.
New York, New York
 
Philip J. Purcell* (53)                      Chairman of the Board of Directors and Chief Executive Officer of MSDWD,
Director                                     DWR and Novus Credit Services Inc.; Director of InterCapital, DWSC and
1585 Broadway                                Distributors; Director or Trustee of the Dean Witter Funds; Director and/or
New York, New York                           officer of various MSDWD subsidiaries.
 
John L. Schroeder (66)                       Retired; Director or Trustee of the Dean Witter Funds; Director of Citizens
Director                                     Utilities Company; formerly Executive Vice President and Chief Investment
c/o Gordon Altman Butowsky                   Officer of the Home Insurance Company (August, 1991-September, 1995).
Weitzen Shalov & Wein
Counsel to the Independent Directors
114 West 47th Street
New York, New York
 
Barry Fink (42)                              Senior Vice President (since March, 1997) and Secretary and General Counsel
Vice President, Secretary                    (since February, 1997) of InterCapital and DWSC; Senior Vice President
and General Counsel                          (since March, 1997) and Assistant Secretary and Assistant General Counsel
Two World Trade Center                       (since February, 1997) of Distributors; Assistant Secretary of DWR (since
New York, New York                           August, 1996); Vice President, Secretary and General Counsel of the Dean
                                             Witter Funds and the TCW/DW Funds (since February, 1997); previously First
                                             Vice President (June, 1993-February, 1997), Vice President (until June,
                                             1993) and Assistant Secretary and Assistant General Counsel of InterCapital
                                             and DWSC and Assistant Secretary of the Dean Witter Funds and the TCW/DW
                                             Funds.
 
David F. Myers (43)                          Vice President of InterCapital.
Vice President
Two World Trade Center
New York, New York
</TABLE>
    
 
                                       7
<PAGE>
   
<TABLE>
<CAPTION>
       NAME, AGE, POSITION WITH FUND
                AND ADDRESS                                 PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- -------------------------------------------  ---------------------------------------------------------------------------
<S>                                          <C>
Catherine Maniscalco (34)                    Vice President (since June, 1997) and a portfolio manager (since March,
Vice President                               1995) of InterCapital; formerly a portfolio management product specialist
Two World Trade Center                       at National Investor Data Services (April, 1994-March, 1995) and a
New York, New York                           portfolio manager at Prudential Securities Investment Management (July,
                                             1990-April, 1994).
 
Thomas F. Caloia (51)                        First Vice President and Assistant Treasurer of InterCapital and DWSC;
Treasurer                                    Treasurer of the Dean Witter Funds and the TCW/DW Funds.
Two World Trade Center
New York, New York
<FN>
- ------------
 *Denotes Directors who are "interested persons" of the Fund, as defined in the
Act.
**Mr. Hedien's term as Director will commence on September 1, 1997.
</TABLE>
    
 
   
    In addition, Robert M. Scanlan, President and Chief Operating Officer of
InterCapital and DWSC, Executive Vice President of Distributors and DWTC and
Director of DWTC, Mitchell M. Merin, President and Chief Strategic Officer of
InterCapital and DWSC, Executive Vice President of Distributors and DWTC and
Director of DWTC, Executive Vice President, Chief Administrative Officer and
Director of DWR and Director of SPS Transaction Services, Inc. and various other
MSDWD subsidiaries. Joseph J. McAlinden, Executive Vice President and Chief
Investment Officer of InterCapital and Director of DWTC, Robert S. Giambrone,
Senior Vice President of InterCapital, DWSC, Distributors and DWTC and Director
of DWTC, and Paul D. Vance, Kenton J. Hinchliffe and Ira N. Ross, Senior Vice
Presidents of InterCapital, are Vice Presidents of the Fund. In addition,
Marilyn K. Cranney, First Vice President and Assistant General Counsel of
InterCapital and DWSC, and LouAnne D. McInnis, Carsten Otto and Ruth Rossi, Vice
Presidents and Assistant General Counsels of InterCapital and DWSC, and Frank
Bruttomesso, a Staff Attorney with InterCapital, are Assistant Secretaries of
the Fund.
    
 
THE BOARD OF DIRECTORS, THE INDEPENDENT DIRECTORS, AND THE COMMITTEES
 
   
    The Board of Directors currently consists of eight (8) directors; as noted
above, Mr. Hedien's term will commence on September 1, 1997. These same
individuals also serve as directors or trustees for all of the Dean Witter
Funds, and are referred to in this section as Directors. As of the date of this
Statement of Additional Information, there are a total of 83 Dean Witter Funds,
comprised of 126 portfolios. As of June 30, 1997, the Dean Witter Funds had
total net assets of approximately $87.9 billion and more than six million
shareholders.
    
 
   
    Six Directors and Mr. Hedien (77% of the total number) have no affiliation
or business connection with InterCapital or any of its affiliated persons and do
not own any stock or other securities issued by InterCapital's parent company,
MSDWD. These are the "disinterested" or "independent" Directors. The other two
Directors (the "management Directors") are affiliated with InterCapital. Four of
the six independent Directors are also Independent Directors of the TCW/DW
Funds.
    
 
    Law and regulation establish both general guidelines and specific duties for
the Independent Directors. The Dean Witter Funds seek as Independent Directors
individuals of distinction and experience in business and finance, government
service or academia; these are people whose advice and counsel are in demand by
others and for whom there is often competition. To accept a position on the
Funds' Boards, such individuals may reject other attractive assignments because
the Funds make substantial demands on their time. Indeed, by serving on the
Funds' Boards, certain Directors who would otherwise be qualified and in demand
to serve on bank boards would be prohibited by law from doing so.
 
   
    All of the current Independent Directors serve as members of the Audit
Committee and the Committee of the Independent Directors. Three of them also
serve as members of the Derivatives Committee. During the calendar year ended
December 31, 1996, the three Committees held a combined total of sixteen
meetings.
    
 
                                       8
<PAGE>
The Committees hold some meetings at InterCapital's offices and some outside
InterCapital. Management Directors or officers do not attend these meetings
unless they are invited for purposes of furnishing information or making a
report.
 
    The Committee of the Independent Directors is charged with recommending to
the full Board approval of management, advisory and administration contracts,
Rule 12b-1 plans and distribution and underwriting agreements; continually
reviewing Fund performance; checking on the pricing of portfolio securities,
brokerage commissions, transfer agent costs and performance, and trading among
Funds in the same complex; and approving fidelity bond and related insurance
coverage and allocations, as well as other matters that arise from time to time.
The Independent Directors are required to select and nominate individuals to
fill any Independent Director vacancy on the Board of any Fund that has a Rule
12b-1 plan of distribution. Most of the Dean Witter Funds have such a plan.
 
    The Audit Committee is charged with recommending to the full Board the
engagement or discharge of the Fund's independent accountants; directing
investigations into matters within the scope of the independent accountants'
duties, including the power to retain outside specialists; reviewing with the
independent accountants the audit plan and results of the auditing engagement;
approving professional services provided by the independent accountants and
other accounting firms prior to the performance of such services; reviewing the
independence of the independent accountants; considering the range of audit and
non-audit fees; reviewing the adequacy of the Fund's system of internal
controls; and preparing and submitting Committee meeting minutes to the full
Board.
 
    Finally, the Board of each Fund has formed a Derivatives Committee to
establish parameters for and oversee the activities of the Fund with respect to
derivative investments, if any, made by the Fund.
 
DUTIES OF CHAIRMAN OF COMMITTEE OF THE INDEPENDENT DIRECTORS AND AUDIT COMMITTEE
 
    The Chairman of the Committee of the Independent Directors and the Audit
Committee maintains an office at the Funds' headquarters in New York. He is
responsible for keeping abreast of regulatory and industry developments and the
Funds' operations and management. He screens and/or prepares written materials
and identifies critical issues for the Independent Directors to consider,
develops agendas for Committee meetings, determines the type and amount of
information that the Committees will need to form a judgment on various issues,
and arranges to have that information furnished to Committee members. He also
arranges for the services of independent experts and consults with them in
advance of meetings to help refine reports and to focus on critical issues.
Members of the Committees believe that the person who serves as Chairman of both
Committees and guides their efforts is pivotal to the effective functioning of
the Committees.
 
    The Chairman of the Committees also maintains continuous contact with the
Funds' management, with independent counsel to the Independent Directors and
with the Funds' independent auditors. He arranges for a series of special
meetings involving the annual review of investment advisory, management and
other operating contracts of the Funds and, on behalf of the Committees,
conducts negotiations with the Investment Manager and other service providers.
In effect, the Chairman of the Committees serves as a combination of chief
executive and support staff of the Independent Directors.
 
    The Chairman of the Committee of the Independent Directors and the Audit
Committee is not employed by any other organization and devotes his time
primarily to the services he performs as Committee Chairman and Independent
Director of the Dean Witter Funds and as an Independent Director and, since July
1, 1996, as Chairman of the Committee of the Independent Trustees and the Audit
Committee of the TCW/DW Funds. The current Committee Chairman has had more than
35 years experience as a senior executive in the investment company industry.
 
ADVANTAGES OF HAVING SAME INDIVIDUALS AS INDEPENDENT DIRECTORS FOR ALL DEAN
WITTER FUNDS
 
    The Independent Directors and the Funds' management believe that having the
same Independent Directors for each of the Dean Witter Funds avoids the
duplication of effort that would arise from having different groups of
individuals serving as Independent Directors for each of the Funds or even of
sub-groups of Funds. They believe that having the same individuals serve as
Independent Directors of all the Funds tends to increase their knowledge and
expertise regarding matters which affect the Fund complex generally and
 
                                       9
<PAGE>
enhances their ability to negotiate on behalf of each Fund with the Fund's
service providers. This arrangement also precludes the possibility of separate
groups of Independent Directors arriving at conflicting decisions regarding
operations and management of the Funds and avoids the cost and confusion that
would likely ensue. Finally, having the same Independent Directors serve on all
Fund Boards enhances the ability of each Fund to obtain, at modest cost to each
separate Fund, the services of Independent Directors, and a Chairman of their
Committees, of the caliber, experience and business acumen of the individuals
who serve as Independent Directors of the Dean Witter Funds.
 
COMPENSATION OF INDEPENDENT DIRECTORS
 
    The Fund pays each Independent Director an annual fee of $1,000 plus a per
meeting fee of $50 for meetings of the Board of Directors or committees of the
Board of Directors attended by the Director (the Fund pays the Chairman of the
Audit Committee an annual fee of $750 and pays the Chairman of the Committee of
the Independent Directors an additional annual fee of $1,200). The Fund also
reimburses such Directors for travel and other out-of-pocket expenses incurred
by them in connection with attending such meetings. Directors and officers of
the Fund who are or have been employed by the Investment Manager or an
affiliated company receive no compensation or expense reimbursement from the
Fund.
 
    The following table illustrates the compensation paid to the Fund's
Independent Directors by the Fund for the fiscal year ended February 28, 1997.
 
                               FUND COMPENSATION
 
<TABLE>
<CAPTION>
                                                                   AGGREGATE
                                                                 COMPENSATION
NAME OF INDEPENDENT DIRECTOR                                     FROM THE FUND
- --------------------------------------------------------------  ---------------
<S>                                                             <C>
Michael Bozic.................................................      $1,750
Edwin J. Garn.................................................       1,850
John R. Haire.................................................       3,750
Dr. Manuel H. Johnson.........................................       1,800
Michael E. Nugent.............................................       1,850
John L. Schroeder.............................................       1,850
</TABLE>
 
    The following table illustrates the compensation paid to the Fund's
Independent Directors for the calendar year ended December 31, 1996 for services
to the 82 Dean Witter Funds and, in the case of Messrs. Haire, Johnson, Nugent
and Schroeder, the 14 TCW/DW Funds that were in operation at December 31, 1996.
With respect to Messrs. Haire, Johnson, Nugent and Schroeder, the TCW/DW Funds
are included solely because of a limited exchange privilege between those Funds
and five Dean Witter Money Market Funds.
 
   
           CASH COMPENSATION FROM DEAN WITTER FUNDS AND TCW/DW FUNDS
    
 
   
<TABLE>
<CAPTION>
                                                                   FOR SERVICE AS    FOR SERVICE
                                                                    CHAIRMAN OF          AS          TOTAL CASH
                                                                   COMMITTEES OF     CHAIRMAN OF    COMPENSATION
                               FOR SERVICE                          INDEPENDENT     COMMITTEES OF   FOR SERVICES
                              AS DIRECTOR OR                         DIRECTORS/      INDEPENDENT         TO
                               TRUSTEE AND       FOR SERVICE AS     TRUSTEES AND    TRUSTEES AND       82 DEAN
                             COMMITTEE MEMBER     TRUSTEE AND          AUDIT            AUDIT          WITTER
                                OF 82 DEAN      COMMITTEE MEMBER   COMMITTEES OF    COMMITTEES OF     FUNDS AND
NAME OF                           WITTER          OF 14 TCW/DW     82 DEAN WITTER     14 TCW/DW       14 TCW/DW
INDEPENDENT DIRECTOR              FUNDS              FUNDS             FUNDS            FUNDS           FUNDS
- ---------------------------  ----------------   ----------------   --------------   -------------   -------------
<S>                          <C>                <C>                <C>              <C>             <C>
Michael Bozic..............      $138,850           --                 --               --            $138,850
Edwin J. Garn..............       140,900           --                 --               --             140,900
John R. Haire..............       106,400           $64,283           $195,450        $ 12,187         378,320
Dr. Manuel H. Johnson......       137,100            66,483            --               --             203,583
Michael E. Nugent..........       138,850            64,283            --               --             203,133
John L. Schroeder..........       137,150            69,083            --               --             206,233
</TABLE>
    
 
    As of the date of this Statement of Additional Information, 57 of the Dean
Witter Funds, including the Fund, have adopted a retirement program under which
an Independent Director who retires after serving for at least five years (or
such lesser period as may be determined by the Board) as an Independent Director
or Trustee of
 
                                       10
<PAGE>
any Dean Witter Fund that has adopted the retirement program (each such Fund
referred to as an "Adopting Fund" and each such Director referred to as an
"Eligible Director") is entitled to retirement payments upon reaching the
eligible retirement age (normally, after attaining age 72). Annual payments are
based upon length of service. Currently, upon retirement, each Eligible Director
is entitled to receive from the Adopting Fund, commencing as of his or her
retirement date and continuing for the remainder of his or her life, an annual
retirement benefit (the "Regular Benefit") equal to 25.0% of his or her Eligible
Compensation plus 0.4166666% of such Eligible Compensation for each full month
of service as an Independent Director or Trustee of any Adopting Fund in excess
of five years up to a maximum of 50.0% after ten years of service. The foregoing
percentages may be changed by the Board.(1) "Eligible Compensation" is one-fifth
of the total compensation earned by such Eligible Director for service to the
Adopting Fund in the five year period prior to the date of the Eligible
Director's retirement. Benefits under the retirement program are not secured or
funded by the Adopting Funds.
 
    The following table illustrates the retirement benefits accrued to the
Fund's Independent Directors by the Fund for the fiscal year ended February 28,
1997 and by the 57 Dean Witter Funds (including the Fund) for the year ended
December 31, 1996, and the estimated retirement benefits for the Fund's
Independent Directors, to commence upon their retirement, from the Fund as of
February 28, 1997 and from the 57 Dean Witter Funds as of December 31, 1996.
- ------------
(1) An Eligible Director may elect alternate payments of his or her retirement
    benefits based upon the combined life expectancy of such Eligible Director
    and his or her spouse on the date of such Eligible Director's retirement.
    The amount estimated to be payable under this method, through the remainder
    of the later of the lives of such Eligible Director and spouse, will be the
    actuarial equivalent of the Regular Benefit. In addition, the Eligible
    Director may elect that the surviving spouse's periodic payment of benefits
    will be equal to either 50% or 100% of the previous periodic amount, an
    election that, respectively, increases or decreases the previous periodic
    amount so that the resulting payments will be the actuarial equivalent of
    the Regular Benefit.
 
          RETIREMENT BENEFITS FROM THE FUND AND ALL DEAN WITTER FUNDS
 
<TABLE>
<CAPTION>
                                             FOR ALL ADOPTING FUNDS             RETIREMENT         ESTIMATED ANNUAL
                                          -----------------------------          BENEFITS              BENEFITS
                                            ESTIMATED                           ACCRUED AS               UPON
                                            CREDITED                             EXPENSES           RETIREMENT(2)
                                              YEARS         ESTIMATED     ----------------------   ----------------
                                          OF SERVICE AT   PERCENTAGE OF                  BY ALL     FROM   FROM ALL
                                           RETIREMENT       ELIGIBLE       BY THE       ADOPTING    THE    ADOPTING
NAME OF INDEPENDENT DIRECTOR              (MAXIMUM 10)    COMPENSATION      FUND         FUNDS      FUND    FUNDS
- ----------------------------------------  -------------   -------------   ---------     --------   ------  --------
<S>                                       <C>             <C>             <C>           <C>        <C>     <C>
Michael Bozic...........................        10            50.0%       $     379     $20,147    $  925  $ 51,325
Edwin J. Garn...........................        10            50.0              549      27,772       925    51,325
John R. Haire...........................        10            50.0             (385)(3)  46,952     2,246   129,550
Dr. Manuel H. Johnson...................        10            50.0              230      10,926       925    51,325
Michael E. Nugent.......................        10            50.0              394      19,217       925    51,325
John L. Schroeder.......................         8            41.7              732      38,700       771    42,771
</TABLE>
 
- ------------
(2) Based on current levels of compensation. Amount of annual benefits also
    varies depending on the Director's elections described in Footnote (1)
    above.
 
(3) This number reflects the effect of the extension of Mr. Haire's term as
    Director until June 1, 1998.
 
    As of the date of this Statement of Additional Information, the aggregate
number of shares of Common Stock of the Fund owned by the Fund's officers and
Directors as a group was less than 1 percent of the Fund's shares of Common
Stock outstanding.
 
INVESTMENT PRACTICES AND POLICIES
- --------------------------------------------------------------------------------
 
FOREIGN SECURITIES
 
    As discussed in the Prospectus, the Fund may invest in securities of foreign
companies. It should be noted that there may be less publicly available
information about foreign issuers than about domestic issuers, and foreign
issuers may not be subject to accounting, auditing and financial reporting
standards and requirements comparable to those of domestic issuers. Securities
of some foreign issuers are less liquid and
 
                                       11
<PAGE>
more volatile than securities of comparable domestic issuers and foreign
brokerage commissions are generally higher than in the United States. Foreign
securities markets may also be less liquid, more volatile and less subject to
government supervision than in the United States. Investments in foreign
countries could be affected by other factors not present in the United States,
including expropriation, confiscatory taxation and potential difficulties in
enforcing contractual obligations. During the fiscal year ended February 28,
1997 the Fund's purchases of securities of foreign issuers did not exceed 5% of
the Fund's net assets.
 
SECURITY LOANS
 
    Consistent with applicable regulatory requirements, the Fund may lend its
portfolio securities to brokers, dealers and other financial institutions,
provided that such loans are callable at any time by the Fund (subject to notice
provisions described below), and are at all times secured by cash or cash
equivalents, which are maintained in a segregated account pursuant to applicable
regulations and that are at least equal to the market value, determined daily,
of the loaned securities. The advantage of such loans is that the Fund continues
to receive the income on the loaned securities while at the same time earning
interest on the cash amounts deposited as collateral, which will be invested in
short-term obligations.
 
    A loan may be terminated by the borrower on one business day's notice, or by
the Fund on four business days' notice. If the borrower fails to deliver the
loaned securities within four days after receipt of notice, the Fund could use
the collateral to replace the securities while holding the borrower liable for
any excess of replacement cost over collateral. As with any extensions of
credit, there are risks of delay in recovery and, in some cases, even loss of
rights in the collateral should the borrower of the securities fail financially.
However, these loans of portfolio securities will only be made to firms deemed
by the Fund's management to be creditworthy and when the income which can be
earned from such loans justifies the attendant risks. Upon termination of the
loan, the borrower is required to return the securities to the Fund. Any gain or
loss in the market price of the securities during the period of the loan would
inure to the Fund. The Fund will pay reasonable finder's, administrative and
custodial fees in connection with a loan of its securities. The creditworthiness
of firms to which the Fund lends its portfolio securities will be monitored on
an ongoing basis.
 
    When voting or consent rights which accompany loaned securities pass to the
borrower, the Fund will follow the policy of calling the loaned securities, to
be delivered within one day after notice, to permit the exercise of such rights
if the matters involved would have a material effect on the Fund's investment in
such loaned securities. During its fiscal year ended February 28, 1997, the Fund
did not loan any of its portfolio securities and it has no intention of doing so
in the foreseeable future.
 
BORROWING OF MONEY
 
    The Fund, from time to time, may borrow from a bank for temporary or
emergency purposes in amounts not exceeding 5% of its total assets. (See
Investment Restriction 6.)
 
OPTIONS AND FUTURES TRANSACTIONS
 
    As discussed in the Prospectus, the Fund may write covered call options
against securities held in its portfolio and covered put options on eligible
portfolio securities and stock indexes and purchase options of the same series
to effect closing transactions, and may hedge against potential changes in the
market value of investments (or anticipated investments) by purchasing put and
call options on portfolio (or eligible portfolio) securities and engaging in
transactions involving futures contracts and options on such contracts. Call and
put options on U.S. Treasury notes, bonds and bills and equity securities are
listed on Exchanges and are written in over-the-counter transactions ("OTC
options"). Listed options are issued by the Options Clearing Corporation
("OCC"). Ownership of a listed call option gives the Fund the right to buy from
the OCC the underlying security covered by the option at the stated exercise
price (the price per unit of the underlying security) by filing an exercise
notice prior to the expiration date of the option. The writer (seller) of the
option would then have the obligation to sell to the OCC the underlying security
at that exercise price prior to the expiration date of the option, regardless of
its then current market price. Ownership of a listed put option would give the
Fund the right to sell the underlying security to the OCC at the stated exercise
price. Upon notice of exercise of the put option, the writer of the put would
have the obligation to purchase the underlying security from the OCC at the
exercise price.
 
                                       12
<PAGE>
    OPTIONS ON TREASURY BONDS AND NOTES.  Because trading interest in options
written on Treasury bonds and notes tends to center on the most recently
auctioned issues, the exchanges on which such securities trade will not continue
indefinitely to introduce options with new expirations to replace expiring
options on particular issues. Instead, the expirations introduced at the
commencement of options trading on a particular issue will be allowed to run
their course, with the possible addition of a limited number of new expirations
as the original ones expire. Options trading on each issue of bonds or notes
will thus be phased out as new options are listed on more recent issues, and
options representing a full range of expirations will not ordinarily be
available for every issue on which options are traded.
 
    OPTIONS ON TREASURY BILLS.  Because a deliverable Treasury bill changes from
week to week, writers of Treasury bill calls cannot provide in advance for their
potential exercise settlement obligations by acquiring and holding the
underlying security. However, if the Fund holds a long position in Treasury
bills with a principal amount of the securities deliverable upon exercise of the
option, the position may be hedged from a risk standpoint by the writing of a
call option. For so long as the call option is outstanding, the Fund will hold
the Treasury bills in a segregated account with its Custodian, so that they will
be treated as being covered.
 
    OTC OPTIONS.  Exchange-listed options are issued by the OCC which assures
that all transactions in such options are properly executed. OTC options are
purchased from or sold (written) to dealers or financial institutions which have
entered into direct agreements with the Fund. With OTC options, such variables
as expiration date, exercise price and premium will be agreed upon between the
Fund and the transacting dealer, without the intermediation of a third party
such as the OCC. If the transacting dealer fails to make or take delivery of the
securities underlying an option it has written, in accordance with the terms of
that option, the Fund would lose the premium paid for the option as well as any
anticipated benefit of the transaction. This Fund will engage in OTC option
transactions only with primary U.S. Government securities dealers recognized by
the Federal Reserve Bank of New York.
 
    COVERED CALL WRITING.  As stated in the Prospectus, the Fund is permitted to
write covered call options on portfolio securities in order to aid in achieving
its investment objective. Generally, a call option is "covered" if the Fund
owns, or has the right to acquire, without additional cash consideration (or for
additional cash consideration held for the Fund by its Custodian in a segregated
account) the underlying security subject to the option except that in the case
of call options on U.S. Treasury Bills, the Fund might own U.S. Treasury Bills
of a different series from those underlying the call option, but with a
principal amount and value corresponding to the exercise price and a maturity
date no later than that of the securities deliverable under the call option. A
call option is also covered if the Fund holds a call on the same security as the
underlying security of the written option, where the exercise price of the call
used for coverage is equal to or less than the exercise price of the call
written or greater than the exercise price of the call written if the mark to
market difference is maintained by the Fund in cash, U.S. Government securities
or other liquid portfolio securities which the Fund holds in a segregated
account maintained with its Custodian.
 
    The Fund will receive from the purchaser, in return for a call it has
written, a "premium"; i.e., the price of the option. Receipt of these premiums
may better enable the Fund to achieve a greater total return than would be
realized from holding the underlying securities alone. Moreover, the premium
received will offset a portion of the potential loss incurred by the Fund if the
securities underlying the option are ultimately sold by the Fund at a loss. The
premium received will fluctuate with varying economic market conditions. If the
market value of the portfolio securities upon which call options have been
written increases, the Fund may receive less total return from the portion of
its portfolio upon which calls have been written than it would have had such
calls not been written.
 
    During the option period, the Fund may be required, at any time, to deliver
the underlying security against payment of the exercise price on any calls it
has written (exercise of certain listed options may be limited to specific
expiration dates). This obligation is terminated upon the expiration of the
option period or at such earlier time when the writer effects a closing purchase
transaction. A closing purchase transaction is accomplished by purchasing an
option of the same series as the option previously written. However, once the
Fund has been assigned an exercise notice, the Fund will be unable to effect a
closing purchase transaction.
 
                                       13
<PAGE>
    Closing purchase transactions are ordinarily effected to realize a profit on
an outstanding call option, to prevent an underlying security from being called,
to permit the sale of an underlying security or to enable the Fund to write
another call option on the underlying security with either a different exercise
price or expiration date or both. Also, effecting a closing purchase transaction
will permit the cash or proceeds from the concurrent sale of any securities
subject to the option to be used for other investments by the Fund. The Fund may
realize a net gain or loss from a closing purchase transaction depending upon
whether the amount of the premium received on the call option is more or less
than the cost of effecting the closing purchase transaction. Any loss incurred
in a closing purchase transaction may be wholly or partially offset by
unrealized appreciation in the market value of the underlying security.
Conversely, a gain resulting from a closing purchase transaction could be offset
in whole or in part or exceeded by a decline in the market value of the
underlying security.
 
    If a call option expires unexercised, the Fund realizes a gain in the amount
of the premium on the option less the commission paid. Such a gain, however, may
be offset by depreciation in the market value of the underlying security during
the option period. If a call option is exercised, the Fund realizes a gain or
loss from the sale of the underlying security equal to the difference between
the purchase price of the underlying security and the proceeds of the sale of
the security plus the premium received on the option less the commission paid.
 
    Options written by a Fund normally have expiration dates of from up to nine
months (equity securities) to eighteen months (fixed-income securities) from the
date written. The exercise price of a call option may be below, equal to or
above the current market value of the underlying security at the time the option
is written. See "Risks of Options and Futures Transactions," below.
 
    COVERED PUT WRITING.  As stated in the Prospectus, as a writer of a covered
put option, the Fund incurs an obligation to buy the security underlying the
option from the purchaser of the put, at the option's exercise price at any time
during the option period, at the purchaser's election (certain listed put
options written by the Fund will be exercisable by the purchaser only on a
specific date). A put is "covered" if, at all times, the Fund maintains, in a
segregated account maintained on its behalf at the Fund's Custodian, cash, U.S.
Government securities or other liquid portfolio securities in an amount equal to
at least the exercise price of the option, at all times during the option
period. Similarly, a short put position could be covered by the Fund by its
purchase of a put option on the same security as the underlying security of the
written option, where the exercise price of the purchased option is equal to or
more than the exercise price of the put written or less than the exercise price
of the put written if the mark to market difference is maintained by the Fund in
cash, U.S. Government securities or other liquid portfolio securities which the
Fund holds in a segregated account maintained at its Custodian. In writing puts,
the Fund assumes the risk of loss should the market value of the underlying
security decline below the exercise price of the option (any loss being
decreased by the receipt of the premium on the option written). During the
option period, the Fund may be required, at any time, to make payment of the
exercise price against delivery of the underlying security. The operation of and
limitations on covered put options in other respects are substantially identical
to those of call options.
 
    The Fund will write put options for two purposes: (1) to receive the income
derived from the premiums paid by purchasers; and (2) when the Investment
Manager wishes to purchase the security underlying the option at a price lower
than its current market price, in which case it will write the covered put at an
exercise price reflecting the lower purchase price sought. The potential gain on
a covered put option is limited to the premium received on the option (less the
commissions paid on the transaction) while the potential loss equals the
differences between the exercise price of the option and the current market
price of the underlying securities when the put is exercised, offset by the
premium received (less the commissions paid on the transaction).
 
    PURCHASING CALL AND PUT OPTIONS.  As stated in the Prospectus, the Fund may
purchase listed and OTC call and put options on securities and stock indexes in
amounts equalling up to 10% of its total assets, with a maximum of 5% of the
Fund's assets invested in stock index options. The Fund may purchase call
options only in order to close out a covered call position (see "Covered Call
Writing" above). The purchase of the call option to effect a closing transaction
on a call written over-the-counter may be a listed or OTC option. In either
 
                                       14
<PAGE>
case, the call purchased is likely to be on the same securities and have the
same terms as the written option. If purchased over-the-counter, the option
would generally be acquired from the dealer or financial institution which
purchased the call written by the Fund.
 
    The Fund may purchase put options on securities which it holds (or has the
right to acquire) in its portfolio only to protect itself against a decline in
the value of the security. If the value of the underlying security were to fall
below the exercise price of the put purchased in an amount greater than the
premium paid for the option, the Fund would incur no additional loss. The Fund
may also purchase put options to close out written put positions in a manner
similar to call options closing purchase transactions. In addition, the Fund may
sell a put option which it has previously purchased prior to the sale of the
securities underlying such option. Such a sale would result in a net gain or
loss depending on whether the amount received on the sale is more or less than
the premium and other transaction costs paid on the put option which is sold.
And such gain or loss could be offset in whole or in part by a change in the
market value of the underlying security. If a put option purchased by the Fund
expired without being sold or exercised, the premium would be lost.
 
    RISKS OF OPTIONS TRANSACTIONS.  During the option period, the covered call
writer has, in return for the premium on the option, given up the opportunity
for capital appreciation above the exercise price should the market price of the
underlying security increase, but has retained the risk of loss should the price
of the underlying security decline. The secured put writer also retains the risk
of loss should the market value of the underlying security decline below the
exercise price of the option less the premium received on the sale of the
option. In both cases, the writer has no control over the time when it may be
required to fulfill its obligation as a writer of the option. Once an option
writer has received an exercise notice, it cannot effect a closing purchase
transaction in order to terminate its obligation under the option and must
deliver or receive the underlying securities at the exercise price.
 
    Prior to exercise or expiration, an option position can only be terminated
by entering into a closing purchase or sale transaction. If a covered call
option writer is unable to effect a closing purchase transaction, it cannot sell
the underlying security until the option expires or the option is exercised.
Accordingly, a covered call option writer may not be able to sell an underlying
security at a time when it might otherwise be advantageous to do so. A secured
put option writer who is unable to effect a closing purchase transaction would
continue to bear the risk of decline in the market price of the underlying
security until the option expires or is exercised. In addition, a secured put
writer would be unable to utilize the amount held in cash or U.S. Government or
other liquid portfolio securities as security for the put option for other
investment purposes until the exercise or expiration of the option.
 
    The Fund's ability to close out its position as a writer of an option is
dependent upon the existence of a liquid secondary market on Option Exchanges.
There is no assurance that such a market will exist, particularly in the case of
OTC options. However, the Fund may be able to purchase an offsetting option
which does not close out its position as a writer but constitutes an asset of
equal value to the obligation under the option written. If the Fund is not able
to either enter into a closing purchase transaction or purchase an offsetting
position, it will be required to maintain the securities subject to the call, or
the collateral underlying the put, even though it might not be advantageous to
do so, until a closing transaction can be entered into (or the option is
exercised or expires).
 
    Among the possible reasons for the absence of a liquid secondary market on
an Exchange are: (i) insufficient trading interest in certain options; (ii)
restrictions on transactions imposed by an Exchange; (iii) trading halts,
suspensions or other restrictions imposed with respect to particular classes or
series of options or underlying securities; (iv) interruption of the normal
operations on an Exchange; (v) inadequacy of the facilities of an Exchange or
the OCC to handle current trading volume; or (vi) a decision by one or more
Exchanges to discontinue the trading of options (or a particular class or series
of options), in which event the secondary market on that Exchange (or in that
class or series of options) would cease to exist, although outstanding options
on that Exchange that had been issued by the OCC as a result of trades on that
Exchange would generally continue to be excercisable in accordance with their
terms.
 
    In the event of the bankruptcy of a broker through which the Fund engages in
transactions in options, the Fund could experience delays and/or losses in
liquidating open positions purchased or sold through the
 
                                       15
<PAGE>
broker and/or incur a loss of all or part of its margin deposits with the
broker. Similarly, in the event of the bankruptcy of the writer of an OTC option
purchased by the Fund, the Fund could experience a loss of all or part of the
value of the option. Transactions are entered into by the Fund only with brokers
or financial institutions deemed creditworthy by the Investment Manager.
 
    Each of the Exchanges has established limitations governing the maximum
number of call or put options on the same underlying security or futures
contract (whether or not covered) which may be written by a single investor,
whether acting alone or in concert with others (regardless of whether such
options are written on the same or different Exchanges or are held or written on
one or more accounts or through one or more brokers). An Exchange may order the
liquidation of positions found to be in violation of these limits and it may
impose other sanctions or restrictions. These position limits may restrict the
number of listed options which the Fund may write.
 
    The hours of trading for options may not conform to the hours during which
the underlying securities are traded. To the extent that the option markets
close before the markets for the underlying securities, significant price and
rate movements can take place in the underlying markets that cannot be reflected
in the option markets.
 
    STOCK INDEX OPTIONS.  As stated in the Prospectus, options on stock indexes
are similar to options on stock except that, rather than the right to take or
make delivery of stock at a specified price, an option on a stock index gives
the holder the right to receive, upon exercise of the option, an amount of cash
if the closing level of the stock index upon which the option is based is
greater than, in the case of a call, or less than, in the case of a put, the
exercise price of the option. This amount of cash is equal to such difference
between the closing price of the index and the exercise price of the option
expressed in dollars times a specified multiple (the "multiplier"). The
multiplier for an index option performs a function similar to the unit of
trading for a stock option. It determines the total dollar value per contract of
each point in the difference between the exercise price of an option and the
current level of the underlying index. A multiplier of 100 means that a
one-point difference will yield $100. Options on different indexes may have
different multipliers. The writer of the option is obligated, in return for the
premium received, to make delivery of this amount. Unlike stock options, all
settlements are in cash and a gain or loss depends on price movements in the
stock market generally (or in a particular segment of the market) rather than
the price movements in individual stocks. Currently, options are traded on the
S&P 100 Index and the S&P 500 Index on the Chicago Board Options Exchange, the
Major Market Index and the Computer Technology Index, Oil Index and
Institutional Index on the American Stock Exchange and the NYSE Index and NYSE
Beta Index on the New York Stock Exchange, The Financial News Composite Index on
the Pacific Stock Exchange and the Value Line Index, National O-T-C Index and
Utilities Index on the Philadelphia Stock Exchange, each of which and any
similar index on which options are traded in the future which include stocks
that are not limited to any particular industry or segment of the market is
referred to as a "broadly based stock market index." The Fund will invest only
in broadly based indexes. Options on broad-based stock indexes provide the Fund
with a means of protecting the Fund against the risk of market wide price
movements. If the Investment Manager anticipates a market decline, the Fund
could purchase a stock index put option. If the expected market decline
materialized, the resulting decrease in the value of the Fund's portfolio would
be offset to the extent of the increase in the value of the put option. If the
Investment Manager anticipates a market rise, the Fund may purchase a stock
index call option to enable the Fund to participate in such rise until
completion of anticipated common stock purchases by the Fund. Purchases and
sales of stock index options also enable the Investment Manager to more speedily
achieve changes in the Fund's equity positions.
 
    The Fund will write put options on stock indexes only if such positions are
covered by cash, U.S. Government securities or other liquid portfolio securities
equal to the aggregate exercise price of the puts, or by a put option on the
same stock index with a strike price no lower than the strike price of the put
option sold by the Fund, which cover is held for the Fund in a segregated
account maintained for it by the Fund's Custodian. All call options on stock
indexes written by the Fund will be covered either by a portfolio of stocks
substantially replicating the movement of the index underlying the call option
or by holding a separate call option on the same stock index with a strike price
no higher than the strike price of the call option sold by the Fund.
 
                                       16
<PAGE>
    RISKS OF OPTIONS ON INDEXES.  Because exercises of stock index options are
settled in cash, call writers such as the Fund cannot provide in advance for
their potential settlement obligations by acquiring and holding the underlying
securities. A call writer can offset some of the risk of its writing position by
holding a diversified portfolio of stocks similar to those on which the
underlying index is based. However, most investors cannot, as a practical
matter, acquire and hold a portfolio containing exactly the same stocks as the
underlying index, and, as a result, bear a risk that the value of the securities
held will vary from the value of the index. Even if an index call writer could
assemble a stock portfolio that exactly reproduced the composition of the
underlying index, the writer still would not be fully covered from a risk
standpoint because of the "timing risk" inherent in writing index options. When
an index option is exercised, the amount of cash that the holder is entitled to
receive is determined by the difference between the exercise price and the
closing index level on the date when the option is exercised. As with other
kinds of options, the writer will not learn that it has been assigned until the
next business day, at the earliest. The time lag between exercise and notice of
assignment poses no risk for the writer of a covered call on a specific
underlying security, such as a common stock, because there the writer's
obligation is to deliver the underlying security, not to pay its value as of a
fixed time in the past. So long as the writer already owns the underlying
security, it can satisfy its settlement obligations by simply delivering it, and
the risk that its value may have declined since the exercise date is borne by
the exercising holder. In contrast, even if the writer of an index call holds
stocks that exactly match the composition of the underlying index, it will not
be able to satisfy its assignment obligations by delivering those stocks against
payment of the exercise price. Instead, it will be required to pay cash in an
amount based on the closing index value on the exercise date; and by the time it
learns that it has been assigned, the index may have declined, with a
corresponding decrease in the value of its stock portfolio. This "timing risk"
is an inherent limitation on the ability of index call writers to cover their
risk exposure by holding stock positions.
 
    A holder of an index option who exercises it before the closing index value
for that day is available runs the risk that the level of the underlying index
may subsequently change. If such a change causes the exercised option to fall
out-of-the-money, the exercising holder will be required to pay the difference
between the closing index value and the exercise price of the option (times the
applicable multiplier) to the assigned writer.
 
    If dissemination of the current level of an underlying index is interrupted,
or if trading is interrupted in stocks accounting for a substantial portion of
the value of an index, the trading of options on that index will ordinarily be
halted. If the trading of options on an underlying index is halted, an exchange
may impose restrictions prohibiting the exercise of such options.
 
    FUTURES CONTRACTS.  As stated in the Prospectus, the Fund may purchase and
sell interest rate and stock index futures contracts ("futures contracts") that
are traded on U.S. commodity exchanges on such underlying securities as U.S.
Treasury bonds, notes, bills and GNMA Certificates ("interest rate" futures) and
such indexes as the S&P 500 Index, the Moody's Investment-Grade Corporate Bond
Index and the New York Stock Exchange Composite Index ("index" futures).
 
    As a futures contract purchaser, the Fund incurs an obligation to take
delivery of a specified amount of the obligation underlying the contract at a
specified time in the future for a specified price. As a seller of a futures
contract, the Fund incurs an obligation to deliver the specified amount of the
underlying obligation at a specified time in return for an agreed upon price.
 
    The Fund will purchase or sell interest rate futures contracts and bond
index futures contracts for the purpose of hedging its fixed-income portfolio
(or anticipated portfolio) securities against changes in prevailing interest
rates. If the Investment Manager anticipates that interest rates may rise and,
concomitantly, the price of fixed-income securities falls, the Fund may sell an
interest rate futures contract or a bond index futures contract. If declining
interest rates are anticipated, the Fund may purchase an interest rate futures
contract to protect against a potential increase in the price of U.S. Government
securities the Fund intends to purchase. Subsequently, appropriate fixed-income
securities may be purchased by the Fund in an orderly fashion; as securities are
purchased, corresponding futures positions would be terminated by offsetting
sales of contracts.
 
                                       17
<PAGE>
    The Fund will purchase or sell stock index futures contracts for the purpose
of hedging its equity portfolio (or anticipated portfolio) securities against
changes in their prices. If the Investment Manager anticipates that the prices
of stock held by the Fund may fall, the Fund may sell a stock index futures
contract. Conversely, if the Investment Manager wishes to hedge against
anticipated price rises in those stocks which the Fund intends to purchase, the
Fund may purchase stock index futures contracts. In addition, interest rate and
stock index futures contracts will be bought or sold in order to close out a
short or long position in a corresponding futures contract.
 
    Although most interest rate futures contracts call for actual delivery or
acceptance of securities, the contracts usually are closed out before the
settlement date without the making or taking of delivery. Stock index futures
contracts provide for the delivery of an amount of cash equal to a specified
dollar amount times the difference between the stock index value at the open or
close of the last trading day of the contract and the futures contract price. A
futures contract sale is closed out by effecting a futures contract purchase for
the same aggregate amount of the specific type of equity security and the same
delivery date. If the sale price exceeds the offsetting purchase price, the
seller would be paid the difference and would realize a gain. If the offsetting
purchase price exceeds the sale price, the seller would pay the difference and
would realize a loss. Similarly, a futures contract purchase is closed out by
effecting a futures contract sale for the same aggregate amount of the specific
type of security and the same delivery date. If the offsetting sale price
exceeds the purchase price, the purchaser would realize a gain, whereas if the
purchase price exceeds the offsetting sale price, the purchaser would realize a
loss. There is no assurance that the Fund will be able to enter into a closing
transaction.
 
    INTEREST RATE FUTURES CONTRACTS.  When the Fund enters into an interest rate
futures contract, it is initially required to deposit with the Fund's Custodian,
in a segregated account in the name of the broker performing the transaction, an
"initial margin" of cash or U.S. Government securities or other liquid portfolio
securities equal to approximately 2% of the contract amount. Initial margin
requirements are established by the Exchanges on which futures contracts trade
and may, from time to time, change. In addition, brokers may establish margin
deposit requirements in excess of those required by the Exchanges.
 
    Initial margin in futures transactions is different from margin in
securities transactions in that initial margin does not involve the borrowing of
funds by a brokers' client but is, rather, a good faith deposit on the futures
contract which will be returned to the Fund upon the proper termination of the
futures contract. The margin deposits made are marked to market daily and the
Fund may be required to make subsequent deposits of cash or U.S. Government
securities called "variation margin," with the Fund's futures contract clearing
broker, which are reflective of price fluctuations in the futures contract.
Currently, interest rate futures contracts can be purchased on debt securities
such as U.S. Treasury Bills and Bonds, U.S. Treasury Notes with Maturities
between 6 1/2 and 10 years, GNMA Certificates and Bank Certificates of Deposit.
 
    INDEX FUTURES CONTRACTS.  As discussed in the Prospectus, the Fund may
invest in index futures contracts. An index futures contract sale creates an
obligation by the Fund, as seller, to deliver cash at a specified future time.
An index futures contract purchase would create an obligation by the Fund, as
purchaser, to take delivery of cash at a specified future time. Futures
contracts on indexes do not require the physical delivery of securities, but
provide for a final cash settlement on the expiration date which reflects
accumulated profits and losses credited or debited to each party's account.
 
    The Fund is required to maintain margin deposits with brokerage firms
through which it effects index futures contracts in a manner similar to that
described above for interest rate futures contracts. Currently, the initial
margin requirements range from 3% to 10% of the contract amount for index
futures. In addition, due to current industry practice, daily variations in
gains and losses on open contracts are required to be reflected in cash in the
form of variation margin payments. The Fund may be required to make additional
margin payments during the term of the contract.
 
    At any time prior to expiration of the futures contract, the Fund may elect
to close the position by taking an opposite position which will operate to
terminate the Fund's position in the futures contract. A final determination of
variation margin is then made, additional cash is required to be paid by or
released to the Fund and the Fund realizes a loss or a gain.
 
                                       18
<PAGE>
    Currently, index futures contracts can be purchased or sold with respect to,
among others, the Standard & Poor's 500 Stock Price Index and the Standard &
Poor's 100 Stock Price Index on the Chicago Mercantile Exchange, the New York
Stock Exchange Composite Index on the New York Futures Exchange, the Major
Market Index on the American Stock Exchange, the Value Line Stock Index on the
Kansas City Board of Trade and the Moody's Investment-Grade Corporate Bond Index
on the Chicago Board of Trade.
 
    OPTIONS ON FUTURES CONTRACTS.  The Fund may purchase and write call and put
options on futures contracts and enter into closing transactions with respect to
such options to terminate an existing position. An option on a futures contract
gives the purchaser the right (in return for the premium paid), and the writer
the obligation, to assume a position in a futures contract (a long position if
the option is a call and a short position if the option is a put) at a specified
exercise price at any time during the term of the option. Upon exercise of the
option, the delivery of the futures position by the writer of the option to the
holder of the option is accompanied by delivery of the accumulated balance in
the writer's futures margin account, which represents the amount by which the
market price of the futures contract at the time of exercise exceeds, in the
case of a call, or is less than, in the case of a put, the exercise price of the
option on the futures contract.
 
    The Fund will purchase and write options on futures contracts for identical
purposes to those set forth above for the purchase of a futures contract
(purchase of a call option or sale of a put option) and the sale of a futures
contract (purchase of a put option or sale of a call option), or to close out a
long or short position in futures contracts. If, for example, the Investment
Manager wished to protect against an increase in interest rates and the
resulting negative impact on the value of a portion of its fixed-income
portfolio, it might write a call option on an interest rate futures contract,
the underlying security of which correlates with the portion of the portfolio
the Investment Manager seeks to hedge. Any premiums received in the writing of
options on futures contracts may, of course, augment the total return of the
Fund and thereby provide a further hedge against losses resulting from price
declines in portions of the Fund's portfolio.
 
    The writer of an option on a futures contract is required to deposit initial
and variation margin pursuant to requirements similar to those applicable to
futures contracts. Premiums received from the writing of an option on a futures
contract are included in initial margin deposits.
 
    LIMITATIONS ON FUTURES CONTRACTS AND OPTIONS ON FUTURES.  The Fund may not
enter into futures contracts or purchase related options thereon if, immediately
thereafter, the amount committed to margin plus the amount paid for premiums for
unexpired options on futures contracts exceeds 5% of the value of the Fund's
total assets, after taking into account unrealized gains and unrealized losses
on such contracts it has entered into, provided, however, that in the case of an
option that is in-the-money (the exercise price of the call (put) option is less
(more) than the market price of the underlying security) at the time of
purchase, the in-the-money amount may be excluded in calculating the 5%.
However, there is no overall limitation on the percentage of the Fund's assets
which may be subject to a hedge position. In addition, in accordance with the
regulations of the Commodity Futures Trading Commission ("CFTC") under which the
Fund is exempted from registration as a commodity pool operator, the Fund may
only enter into futures contracts and options on futures contracts transactions
for purposes of hedging a part or all of its portfolio. If the CFTC changes its
regulations so that the Fund would be permitted to write options on futures
contracts for purposes other than hedging the Fund's investments without CFTC
registration, the Fund may engage in such transactions for those purposes.
Except as described above, there are no other limitations on the use of futures
and options thereon by the Fund.
 
    RISKS OF TRANSACTIONS IN FUTURES CONTRACTS AND RELATED OPTIONS.  As stated
in the Prospectus, the Fund may sell a futures contract to protect against the
decline in the value of securities held by the Fund. However, it is possible
that the futures market may advance and the value of securities held in the
portfolio of the Fund may decline. If this occurred, the Fund would lose money
on the futures contract and also experience a decline in value of its portfolio
securities. However, while this could occur for a very brief period or to a very
small degree, over time the value of a diversified portfolio will tend to move
in the same direction as the futures contracts.
 
                                       19
<PAGE>
    If the Fund purchases a futures contract to hedge against the increase in
value of securities it intends to buy, and the value of such securities
decreases, then the Fund may determine not to invest in the securities as
planned and will realize a loss on the futures contract that is not offset by a
reduction in the price of the securities.
 
    In order to assure that the Fund is entering into transactions in futures
contracts for hedging purposes as such is defined by the CFTC either: 1) a
substantial majority (i.e., approximately 75%) of all anticipatory hedge
transactions (transactions in which the Fund does not own at the time of the
transaction, but expects to acquire, the securities underlying the relevant
futures contract) involving the purchase of futures contracts will be completed
by the purchase of securities which are the subject of the hedge or 2) the
underlying value of all long positions in futures contracts will not exceed the
total value of a) all short-term debt obligations held by the Fund; b) cash held
by the Fund; c) cash proceeds due to the Fund on investments within thirty days;
d) the margin deposited on the contracts; and e) any unrealized appreciation in
the value of the contracts.
 
    If the Fund maintains a short position in a futures contract or has sold a
call option in a futures contract, it will cover this position by holding, in a
segregated account maintained at its Custodian, cash, U.S. Government securities
or other liquid portfolio securities equal in value (when added to any initial
or variation margin on deposit) to the market value of the securities underlying
the futures contract or the exercise price of the option. Such a position may
also be covered by owning the securities underlying the futures contract (in the
case of a stock index futures contract a portfolio of securities substantially
replicating the relevant index), or by holding a call option permitting the Fund
to purchase the same contract at a price no higher than the price at which the
short position was established.
 
    In addition, if the Fund holds a long position in a futures contract or has
sold a put option on a futures contract, it will hold cash, U.S. Government
securities or other liquid portfolio securities equal to the purchase price of
the contract or the exercise price of the put option (less the amount of initial
or variation margin on deposit) in a segregated account maintained for the Fund
by its Custodian. Alternatively, the Fund could cover its long position by
purchasing a put option on the same futures contract with an exercise price as
high or higher than the price of the contract held by the Fund.
 
    Exchanges limit the amount by which the price of a futures contract may move
on any day. If the price moves equal the daily limit on successive days, then it
may prove impossible to liquidate a futures position until the daily limit moves
have ceased. In the event of adverse price movements, the Fund would continue to
be required to make daily cash payments of variation margin on open futures
positions. In such situations, if the Fund has insufficient cash, it may have to
sell portfolio securities to meet daily variation margin requirements at a time
when it may be disadvantageous to do so. In addition, the Fund may be required
to take or make delivery of the instruments underlying interest rate futures
contracts it holds at a time when it is disadvantageous to do so. The inability
to close out options and futures positions could also have an adverse impact on
the Fund's ability to effectively hedge its portfolio.
 
    In the event of the bankruptcy of a broker through which the Fund engages in
transactions in futures or options thereon, the Fund could experience delays
and/or losses in liquidating open positions purchased or sold through the broker
and/or incur a loss of all or part of its margin deposits with the broker.
Transactions are entered into by the Fund only with brokers or financial
institutions deemed creditworthy by the Investment Manager.
 
    As stated in the Prospectus, there may exist an imperfect correlation
between the price movements of futures contracts purchased by the Fund and the
movements in the prices of the securities which are the subject of the hedge. If
participants in the futures market elect to close out their contracts through
offsetting transactions rather than meet margin deposit requirements,
distortions in the normal relationship between the securities and futures
markets could result. Price distortions could also result if investors in
futures contracts opt to make or take delivery of underlying securities rather
than engage in closing transactions due to the resultant reduction in the
liquidity of the futures market. In addition, due to the fact that, from the
point of view of speculators, the deposit requirements in the futures markets
are less onerous than margin requirements in the cash market, increased
participation by speculators in the futures market could cause temporary price
distortions. Due to the possibility of price distortions in the futures market
and because of the imperfect
 
                                       20
<PAGE>
correlation between movements in the prices of securities and movements in the
prices of futures contracts, a correct forecast of stock price or interest rate
trends by the Investment Manager may still not result in a successful hedging
transaction.
 
    As stated in the Prospectus, there is no assurance that a liquid secondary
market will exist for futures contracts and related options in which the Fund
may invest. In the event a liquid market does not exist, it may not be possible
to close out a futures position and, in the event of adverse price movements,
the Fund would continue to be required to make daily cash payments of variation
margin. In addition, limitations imposed by an exchange or board of trade on
which futures contracts are traded may compel or prevent the Fund from closing
out a contract which may result in reduced gain or increased loss to the Fund.
The absence of a liquid market in futures contracts might cause the Fund to make
or take delivery of the underlying securities at a time when it may be
disadvantageous to do so.
 
    Compared to the purchase or sale of futures contracts, the purchase of call
or put options on futures contracts involves less potential risk to the Fund
because the maximum amount at risk is the premium paid for the options (plus
transaction costs). However, there may be circumstances when the purchase of a
call or put option on a futures contract would result in a loss to the Fund
notwithstanding that the purchase or sale of a futures contract would not result
in a loss, as in the instance where there is no movement in the prices of the
futures contract or underlying securities.
 
REPURCHASE AGREEMENTS
 
    When cash may be available for only a few days, it may be invested by the
Fund in repurchase agreements until such time as it may otherwise be invested or
used for payments of obligations of the Fund. These agreements, which may be
viewed as a type of secured lending by the Fund, typically involve the
acquisition by the Fund of debt securities from a selling financial institution
such as a bank, savings and loan association or broker-dealer. The agreement
provides that the Fund will sell back to the institution, and that the
institution will repurchase, the underlying security ("collateral") at a
specified price and at a fixed time in the future, usually not more than seven
days from the date of purchase. The collateral will be maintained in a
segregated account and will be marked-to-market daily to determine that the
value of the collateral, as specified in the agreement, does not decrease below
the purchase price plus accrued interest. If such decrease occurs, additional
collateral will be requested and, when received, added to the account to
maintain full collateralization. The Fund will accrue interest from the
institution until the time when the repurchase is to occur. Although such date
is deemed by the Fund to be the maturity date of a repurchase agreement, the
maturities of securities subject to repurchase agreements are not subject to any
limits.
 
    While repurchase agreements involve certain risks not associated with direct
investments in debt securities, the Fund follows procedures designed to minimize
such risks. These procedures include effecting repurchase transactions only with
large, well-capitalized and well-established financial institutions whose
financial condition will be continually monitored by the Investment Manager
subject to procedures established by the Board of Directors of the Fund. In
addition, as described above, the value of the collateral underlying the
repurchase agreement will be at least equal to the repurchase price, including
any accrued interest earned on the repurchase agreement. In the event of a
default or bankruptcy by a selling financial institution, the Fund will seek to
liquidate such collateral. However, the exercising of the Fund's right to
liquidate such collateral could involve certain costs or delays and, to the
extent that proceeds from any sale upon a default of the obligation to
repurchase were less than the repurchase price, the Fund could suffer a loss. It
is the current policy of the Fund not to invest in repurchase agreements that do
not mature within seven days if any such investment, together with any other
illiquid assets held by the Fund, amounts to more than 15% of its total assets.
 
WHEN-ISSUED AND DELAYED DELIVERY SECURITIES AND FORWARD COMMITMENTS
 
    From time to time the Fund may purchase securities on a when-issued or
delayed delivery basis or may purchase or sell securities on a forward
commitment basis. When such transactions are negotiated, the price is fixed at
the time of the commitment, but delivery and payment can take place a month or
more after the date of commitment. While the Fund will only purchase securities
on a when-issued, delayed delivery or forward commitment basis with the
intention of acquiring the securities, the Fund may sell the securities before
the
 
                                       21
<PAGE>
settlement date, if it is deemed advisable. The securities so purchased or sold
are subject to market fluctuation and no interest or dividends accrue to the
purchaser prior to the settlement date. At the time the Fund makes the
commitment to purchase or sell securities on a when-issued, delayed delivery or
forward commitment basis, it will record the transaction and thereafter reflect
the value, each day, of such security purchased, or if a sale, the proceeds to
be received, in determining its net asset value. At the time of delivery of the
securities, their value may be more or less than the purchase or sale price. The
Fund will also establish a segregated account with its custodian bank in which
it will continually maintain cash or cash equivalents or other liquid portfolio
securities equal in value to commitments to purchase securities on a
when-issued, delayed delivery or forward commitment basis. During the fiscal
year ended February 28, 1997, the Fund did not purchase securities on a
when-issued, delayed delivery or forward commitment basis.
 
WHEN, AS AND IF ISSUED SECURITIES
 
    The Fund may purchase securities on a "when, as and if issued" basis under
which the issuance of the security depends upon the occurrence of a subsequent
event, such as approval of a merger, corporate reorganization or debt
restructuring. The commitment for the purchase of any such security will not be
recognized in the portfolio of the Fund until the Investment Manager determines
that issuance of the security is probable. At such time, the Fund will record
the transaction and, in determining its net asset value, will reflect the value
of the security daily. At such time, the Fund will also establish a segregated
account with its custodian bank in which it will maintain cash or cash
equivalents or other liquid portfolio securities equal in value to recognized
commitments for such securities. The value of the Fund's commitments to purchase
the securities of any one issuer, together with the value of all securities of
such issuer owned by the Fund, may not exceed 5% of the value of the Fund's
total assets at the time the initial commitment to purchase such securities is
made (see "Investment Restrictions"). An increase in the percentage of the
Fund's assets committed to the purchase of securities on a "when, as and if
issued" basis may increase the volatility of its net asset value. The Investment
Manager and the Board of Directors do not believe that the net asset value of
the Fund will be adversely affected by its purchase of securities on such basis.
During the fiscal year ended February 28, 1997, the Fund did not purchase
securities on a "when, as and if issued" basis. The Fund may also sell
securities on a "when, as and if issued" basis provided that the issuance of the
security will result automatically from the exchange or conversion of a security
owned by the Fund at the time of sale.
 
PRIVATE PLACEMENTS
 
    The Fund may invest up to 5% of its total assets in securities which are
subject to restrictions on resale because they have not been registered under
the Securities Act of 1933, as amended, or which are otherwise not readily
marketable. These securities are generally referred to as private placements or
restricted securities. Limitations on the resale of such securities may have an
adverse effect on their marketability, and may prevent the Fund from disposing
of them promptly at reasonable prices. The Fund may have to bear the expense of
registering such securities for resale and the risk of substantial delays in
effecting such registration.
 
    The Securities and Exchange Commission has recently adopted Rule 144A under
the Securities Act of 1933, which will permit the Fund to sell restricted
securities to qualified institutional buyers without limitation. The Board of
Directors of the Fund will make a determination as to the liquidity of each
restricted security purchased by the Fund. If a restricted security is
determined to be "liquid," such security will not be included within the
category "illiquid securities," which under current policy may not exceed 15% of
the Fund's total assets. The Rule 144A marketplace of sellers and qualified
institutional buyers is new and still developing and may take a period of time
to develop into a mature liquid market. As such, the market for certain private
placements purchased pursuant to Rule 144A may be initially small or may,
subsequent to purchase, become illiquid. Furthermore, the Investment Manager may
not be possessed of all the information concerning an issue of securities that
it wishes to purchase in a private placement to which it would normally have had
access, had the registration statement necessitated by a public offering been
filed with the Securities and Exchange Commission. During the fiscal year ended
February 28, 1997, the Fund did not purchase any restricted securities.
 
                                       22
<PAGE>
INVESTMENT RESTRICTIONS
- --------------------------------------------------------------------------------
 
    In addition to the investment restrictions enumerated in the Prospectus, the
investment restrictions listed below have been adopted by the Fund as
fundamental policies, except as otherwise indicated. Under the Act, a
fundamental policy may not be changed without the vote of a majority of the
outstanding voting securities of the Fund, as defined in the Act. Such a
majority is defined as the lesser of (a) 67% or more of the shares present at a
meeting of shareholders of the Fund, if the holders of more than 50% of the
outstanding shares are present or represented by proxy; or (b) more than 50% of
the outstanding shares of the Fund. For purposes of the following restrictions:
(i) all percentage limitations apply immediately after a purchase or initial
investment; and (ii) any subsequent change in any applicable percentage
resulting from market fluctuations or other changes in total or net assets does
not require elimination of any security from the portfolio.
 
    The Fund may not:
 
          1.  Invest in securities of any issuer if, to the knowledge of the
    Fund, any officer or director of the Fund or of the Investment Manager owns
    more than 1/2 of 1% of the outstanding securities of such issuer, and such
    officers and directors who own more than 1/2 of 1% own in the aggregate more
    than 5% of the outstanding securities of such issuer.
 
          2.  Purchase or sell real estate or interests therein (including
    limited partnership interests), although the Fund may purchase securities of
    issuers which engage in real estate operations and securities which are
    secured by real estate or interests therein.
 
          3.  Purchase or sell commodities except that the Fund may purchase and
    sell futures contracts and related options.
 
          4.  Purchase oil, gas or other mineral leases, rights or royalty
    contracts or exploration or development programs, except that the Fund may
    invest in the securities of companies which operate, invest in, or sponsor
    such programs.
 
          5.  Purchase securities of other investment companies, except in
    connection with a merger, consolidation, reorganization or acquisition of
    assets.
 
          6.  Borrow money, except that the Fund may borrow from a bank for
    temporary or emergency purposes in amounts not exceeding 5% (taken at the
    lower of cost or current value) of its total assets (not including the
    amount borrowed).
 
          7.  Pledge its assets or assign or otherwise encumber them except to
    secure borrowings effected within the limitations set forth in restriction
    (6). (To meet the requirements of regulations in certain states, the Fund,
    as a matter of operating policy but not as a fundamental policy, will limit
    any pledge of its assets to 4.5% of its net assets so long as shares of the
    Fund are being sold in those states.) For the purposes of this restriction,
    collateral arrangements with respect to the writing of options and
    collateral arrangements with respect to initial or variation margin for
    futures are not deemed to be pledges of assets.
 
          8.  Issue senior securities as defined in the Act except insofar as
    the Fund may be deemed to have issued a senior security by reason of: (a)
    entering into any repurchase agreement; (b) borrowing money in accordance
    with restrictions described above; or (c) lending portfolio securities.
 
          9.  Make loans of money or securities, except: (a) by the purchase of
    debt obligations in which the Fund may invest consistent with its investment
    objective and policies; (b) by investment in repurchase agreements; or (c)
    by lending its portfolio securities.
 
         10.  Make short sales of securities.
 
         11.  Purchase securities on margin, except for such short-term loans as
    are necessary for the clearance of purchases of portfolio securities. The
    deposit or payment by the Fund of initial or variation margin in connection
    with futures contracts or related options thereon is not considered the
    purchase of a security on margin.
 
                                       23
<PAGE>
         12.  Engage in the underwriting of securities, except insofar as the
    Fund may be deemed an underwriter under the Securities Act of 1933 in
    disposing of a portfolio security and then only in an aggregate amount not
    to exceed 5% of the Fund's total assets.
 
         13.  Invest for the purpose of exercising control or management of any
    other issuer.
 
    In addition, the Fund, as a non-fundamental policy, will not invest more
than 5% of the value of its net assets in warrants, including not more than 2%
of such assets in warrants not listed on the New York or American Stock
Exchange. However, the acquisition of warrants attached to other securities is
not subject to this restriction.
 
   
    Notwithstanding any other investment policy or restriction, the Fund may
seek to achieve its investment objective by investing all or substantially all
of its assets in another investment company having substantially the same
investment objective and policies as the Fund.
    
 
PORTFOLIO TRANSACTIONS AND BROKERAGE
- --------------------------------------------------------------------------------
 
    Subject to the general supervision of the Board of Directors, the Investment
Manager is responsible for decisions to buy and sell securities for the Fund,
the selection of brokers and dealers to effect the transactions, and the
negotiation of brokerage commissions, if any. Purchases and sales of securities
on a stock exchange are effected through brokers who charge a commission for
their services. In the over-the-counter market, securities are generally traded
on a "net" basis with dealers acting as principal for their own accounts without
a stated commission, although the price of the security usually includes a
profit to the dealer. The Fund also expects that securities will be purchased at
times in underwritten offerings where the price includes a fixed amount of
compensation, generally referred to as the underwriter's concession or discount.
Options and futures transactions will usually be effected through a broker and a
commission will be charged. On occasion, the Fund may also purchase certain
money market instruments directly from an issuer, in which case no commissions
or discounts are paid. For the fiscal years ended February 28, 1995, February
29, 1996 and February 28, 1997, the Fund paid a total of $373,465, $270,398 and
$986,176, respectively, in brokerage commissions.
 
   
    The Investment Manager currently serves as investment manager or adviser to
a number of clients, including other investment companies, and may in the future
act as investment manager or adviser to others. It is the practice of the
Investment Manager to cause purchase and sale transactions to be allocated among
the Fund and others whose assets it manages in such manner as it deems
equitable. In making such allocations among the Fund and other client accounts,
various factors may be considered, including the respective investment
objectives, the relative size of portfolio holdings of the same or comparable
securities, the availability of cash for investment, the size of investment
commitments generally held and the opinions of the persons responsible for
managing the portfolios of the Fund and other client accounts. In the case of
certain initial and secondary public offerings, the Investment Manager may
utilize a pro rata allocation based on the size of the Dean Witter Funds
involved and the number of shares available from the public offering.
    
 
    The policy of the Fund regarding purchases and sales of securities for its
portfolio is that primary consideration will be given to obtaining the most
favorable prices and efficient executions of transactions. Consistent with this
policy, when securities transactions are effected on a stock exchange, the
Fund's policy is to pay commissions which are considered fair and reasonable
without necessarily determining that the lowest possible commissions are paid in
all circumstances. The Fund believes that a requirement always to seek the
lowest possible commission cost could impede effective portfolio management and
preclude the Fund and the Investment Manager from obtaining a high quality of
brokerage and research services. In seeking to determine the reasonableness of
brokerage commissions paid in any transaction, the Investment Manager relies
upon its experience and knowledge regarding commissions generally charged by
various brokers and on its judgment in evaluating the brokerage and research
services received from the broker effecting the transaction. Such determinations
are necessarily subjective and imprecise, as in most cases an exact dollar value
for those services is not ascertainable.
 
                                       24
<PAGE>
    In seeking to implement the Fund's policies, the Investment Manager effects
transactions with those brokers and dealers who the Investment Manager believes
provide the most favorable prices and are capable of providing efficient
executions. If the Investment Manager believes such price and execution are
obtainable from more than one broker or dealer, it may give consideration to
placing portfolio transactions with those brokers and dealers who also furnish
research and other services to the Fund or the Investment Manager. Such services
may include, but are not limited to, any one or more of the following:
information as to the availability of securities for purchase or sale;
statistical or factual information or opinions pertaining to investment; wire
services; and appraisals or evaluations of portfolio securities. During the
fiscal year ended February 28, 1997, the Fund directed the payment of $708,839
in brokerage commissions in connection with transactions in the aggregate amount
of $320,174,825 to brokers because of research services provided.
 
   
    Consistent with the policy described above, brokerage transactions in
securities listed on exchanges or admitted to unlisted trading privileges may be
effected through DWR and other affiliated brokers and dealers. In order for an
affiliated broker or dealer to effect any portfolio transactions for the Fund,
the commissions, fees or other remuneration received by the affiliated broker or
dealer must be reasonable and fair compared to the commissions, fees or other
remuneration paid to other brokers in connection with comparable transactions
involving similar securities being purchased or sold on an exchange during a
comparable period of time. This standard would allow the affiliated broker or
dealer to receive no more than the remuneration which would be expected to be
received by an unaffiliated broker in a commensurate arm's-length transaction.
Furthermore, the Directors of the Fund, including a majority of the Directors
who are not "interested" persons of the Fund, as defined in the Act, have
adopted procedures which are reasonably designed to provide that any
commissions, fees or other remuneration paid to an affiliated broker or dealer
are consistent with the foregoing standard. The Fund does not reduce the
management fee it pays to the Investment Manager by any amount of the brokerage
commissions it may pay to an affiliated broker or dealer. During the fiscal
years ended February 28, 1995, February 29, 1996 and February 28, 1997, the Fund
paid a total of $84,230, $88,566 and $263,065, respectively, in brokerage
commissions to DWR. During the year ended February 28, 1997, the brokerage
commissions paid to DWR represented approximately 26.68% of the total brokerage
commissions paid by the Fund during the year and were paid on account of
transactions having an aggregate dollar value equal to approximately 41.27% of
the aggregate dollar value of all portfolio transactions of the Fund during the
year for which commissions were paid.
    
 
    Pursuant to an order of the Securities and Exchange Commission, the Fund may
effect principal transactions in certain money market instruments with DWR. The
Fund will limit its transactions with DWR to U.S. Government and Government
Agency Securities, Bank Money Instruments (i.e. Certificates of Deposit and
Bankers' Acceptances) and Commercial Paper. Such transactions will be effected
with DWR only when the price available from DWR is better than that available
from other dealers. During its fiscal year ended February 28, 1997, the Fund did
not effect any principal transactions with DWR.
 
    The information and services received by the Investment Manager from brokers
and dealers may be of benefit to the Investment Manager in the management of
accounts of some of its other clients and may not in all cases benefit the Fund
directly. While the receipt of such information and services is useful in
varying degrees and would generally reduce the amount of research or services
otherwise performed by the Investment Manager and thereby reduce its expenses,
it is of indeterminable value and the Fund does not reduce the management fee it
pays to the Investment Manager by any amount that may be attributable to the
value of such services.
 
PORTFOLIO TRADING
 
   
    It is anticipated that the Fund's portfolio turnover rate will not exceed
200% during the fiscal year ending February 28, 1998. A 200% turnover rate would
occur, for example, if 200% of the securities held in the Fund's portfolio
(excluding all securities whose maturities at acquisition were one year or less)
were sold and replaced within one year. During the fiscal years ended February
29, 1996 and February 28, 1997, the Fund's portfolio turnover rates were 49% and
156%, respectively. The portfolio turnover rate was higher than anticipated for
the fiscal year ended February 28, 1997 because of the increased volatility in
the resources market for such period.
    
 
                                       25
<PAGE>
THE DISTRIBUTOR
- --------------------------------------------------------------------------------
 
   
    As discussed in the Prospectus, shares of the Fund are distributed by Dean
Witter Distributors Inc. (the "Distributor"). The Distributor has entered into a
selected dealer agreement with DWR, which through its own sales organization
sells shares of the Fund. In addition, the Distributor may enter into selected
dealer agreements with other selected broker-dealers. The Distributor, a
Delaware corporation, is an indirect wholly-owned subsidiary of MSDWD. The
Directors of the Fund, including a majority of the Directors who are not, and
were not at the time they voted, interested persons of the Fund, as defined in
the Act (the "Independent Directors"), approved, at their meeting held on June
30, 1997, the current Distribution Agreement (the "Distribution Agreement")
appointing the Distributor exclusive distributor of the Fund's shares and
providing for the Distributor to bear distribution expenses not borne by the
Fund. By its terms, the Distribution Agreement has an initial term ending April
30, 1998 and will remain in effect from year to year thereafter if approved by
the Board.
    
 
   
    The Distributor bears all expenses it may incur in providing services under
the Distribution Agreement. Such expenses include the payment of commissions for
sales of the Fund's shares and incentive compensation to account executives. The
Distributor also pays certain expenses in connection with the distribution of
the Fund's shares, including the costs of preparing, printing and distributing
advertising or promotional materials, and the costs of printing and distributing
prospectuses and supplements thereto used in connection with the offering and
sale of the Fund's shares. The Fund bears the costs of initial typesetting,
printing and distribution of prospectuses and supplements thereto to prospective
shareholders. The Fund also bears the costs of registering the Fund and its
shares under federal securities laws and pays filing fees in accordance with
state securities laws. The Fund and the Distributor have agreed to indemnify
each other against certain liabilities, including liabilities under the
Securities Act of 1933, as amended. Under the Distribution Agreement, the
Distributor uses its best efforts in rendering services to the Fund, but in the
absence of willful misfeasance, bad faith, gross negligence or reckless
disregard of its obligations, the Distributor is not liable to the Fund or any
of its shareholders for any error of judgement or mistake of law or for any act
or omission or for any losses sustained by the Fund or its shareholders.
    
 
PLAN OF DISTRIBUTION
 
   
    The Fund has adopted a Plan of Distribution pursuant to Rule 12b-1 under the
Act (the "Plan"), pursuant to which each Class other than Class D pays the
Distributor compensation accrued daily and payable monthly at the following
annual rates: 0.25% and 1.0% of the average daily net assets of Class A and
Class C, respectively, and, with respect to Class B, 1.0% of the lesser of: (a)
the average daily aggregate gross sales of the Fund's Class B shares since the
inception of the Plan on July 2, 1984 (not including reinvestments of dividends
or capital gains distributions), less the average daily aggregate net asset
value of the Fund's Class B shares redeemed since the Plan's inception upon
which a contingent deferred sales charge has been imposed or upon which such
charge has been waived, or (b) the average daily net assets of Class B
attributable to shares issued, net of related shares redeemed, since inception
of the Plan. The Distributor also receives the proceeds of front-end sales
charges and of contingent deferred sales charges imposed on certain redemptions
of shares, which are separate and apart from payments made pursuant to the Plan
(see "Purchase of Fund Shares" in the Prospectus). The Distributor has informed
the Fund that it received approximately $177,000, $184,694 and $151,113 in
contingent deferred sales charges for the fiscal years ended February 28, 1995,
February 29, 1996 and February 28, 1997, respectively, none of which was
retained by the Distributor.
    
 
   
    The Distributor has informed the Fund that the entire fee payable by Class A
and a portion of the fees payable by each of Class B and Class C each year
pursuant to the Plan equal to 0.25% of such Class's average daily net assets,
are currently each characterized as a "service fee" under the Rules of the
Association of the National Association of Securities Dealers (of which the
Distributor is a member). The "service fee" is a payment made for personal
service and/or the maintenance of shareholder accounts. The remaining portion of
the Plan fees payable by a Class, if any, is characterized as an "asset-based
sales charge" pursuant to the aforementioned Rules of the Association.
    
 
                                       26
<PAGE>
    The Plan was originally adopted by a majority vote of the Board of
Directors, including all of the Directors who are not "interested persons" of
the Fund, as defined in the Act, (the "Independent Directors"), none of whom had
or have any direct or indirect financial interest in the operation of the Plan
(the "Independent 12b-1 Directors"), cast in person at a meeting called for the
purpose of voting on the Plan, on April 16, 1984, and by the shareholders
holding a majority, as defined in the Act, of the outstanding shares of the
Fund, at the Fund's Annual Meeting of Stockholders held on June 22, 1984.
 
   
    At their meeting held on October 30, 1992, the Directors of the Fund,
including all of the Independent 12b-1 Directors, approved certain amendments to
the Plan which took effect in January, 1993 and were designed to reflect the
fact that upon an internal reorganization, the share distribution activities
theretofore performed for the Fund by DWR were assumed by the Distributor and
DWR's sales activities are now being performed pursuant to the terms of a
selected dealer agreement between the Distributor and DWR. The amendments
provide that payments under the Plan will be made to the Distributor rather than
to DWR as before the amendment, and that the Distributor in turn is authorized
to make payments to DWR, its affiliates or other selected broker-dealers (or
direct that the Fund pay such entities directly). The Distributor is also
authorized to retain part of such fee as compensation for its own
distribution-related expenses.
    
 
   
    At their meeting held on April 28, 1993, the Directors, including a majority
of the Independent 12b-1 Directors, approved certain technical amendments to the
Plan in connection with amendments adopted by the National Association of
Securities Dealers, Inc. to its Rules of the Association. At their meeting held
on October 26, 1995, the Directors of the Fund, including all of the Independent
12b-1 Directors, approved an amendment to the Plan to permit payments to be made
under the Plan with respect to certain distribution expenses incurred in
connection with the distribution of shares, including personal services to
shareholders with respect to holdings of such shares, of an investment company
whose assets are acquired by the Fund in a tax-free reorganization. At their
meeting held on June 30, 1997, the Directors, including a majority of the
Independent 12b-1 Directors, approved amendments to the Plan to reflect the
multiple-class structure for the Fund, which took effect on July 28, 1997.
    
 
   
    Under the Plan and as required by Rule 12b-1, the Directors receive and
review promptly after the end of each calendar quarter a written report provided
by the Distributor of the amounts expended under the Plan and the purpose for
which such expenditures were made. The Fund accrued amounts payable to the
Distributor under the Plan, during the fiscal year ended February 28, 1997, of
$1,910,090. This amount is equal to 0.98% of the Fund's average daily net assets
for the fiscal year and was calculated pursuant to clause (b) of the
compensation formula under the Plan. This amount is treated by the Fund as an
expense in the year it is accrued. This amount represents amounts paid by Class
B only; there were no Class A or Class C shares outstanding on such date.
    
 
   
    The Plan was adopted in order to permit the implementation of the Fund's
method of distribution. Under this distribution method the Fund offers four
Classes of shares, each with a different distribution arrangement as set forth
in the Prospectus.
    
 
   
    With respect to Class A shares, DWR compensates its account executives by
paying them, from proceeds of the front-end sales charge, commissions for the
sale of Class A shares, currently a gross sales credit of up to 5.0% of the
amount sold (except as provided in the following sentence) and an annual
residual commission, currently a residual of up to 0.25% of the current value of
the respective accounts for which they are the account executives or dealers of
record in all cases. On orders of $1 million or more (for which no sales charge
was paid) or net asset value purchases by 401(k) plans or other
employer-sponsored plans qualified under Section 401(a) of the Internal Revenue
Code for which Dean Witter Trust Company ("DWTC") or Dean Witter Trust FSB
("DWTFSB") serves as Trustee or the 401(k) Support Services Group of DWR serves
as recordkeeper, the Investment Manager compensates DWR's account executives by
paying them, from its own funds, a gross sales credit of 1.0% of the amount
sold.
    
 
   
    With respect to Class B shares, DWR compensates its account executives by
paying them, from its own funds, commissions for the sale of Class B shares,
currently a gross sales credit of up to 5.0% of the amount sold (except as
provided in the following sentence) and an annual residual commission, currently
a residual of up to 0.25% of the current value (not including reinvested
dividends or distributions) of the amount sold in all
    
 
                                       27
<PAGE>
   
cases. In the case of retirement plans qualified under Section 401(k) of the
Internal Revenue Code and other employer-sponsored plans qualified under Section
401(a) of the Internal Revenue Code for which DWTC or DWTFSB serves as Trustee
or the 401(k) Support Services Group of DWR serves as recordkeeper, and which
plans are opened on or after July 28, 1997, DWR compensates its account
executives by paying them, from its own funds, a gross sales credit of 3.0% of
the amount sold.
    
 
   
    With respect to Class C shares, DWR compensates its account executives by
paying them, from its own funds, commissions for the sale of Class C shares,
currently a gross sales credit of up to 1.0% of the amount sold and an annual
residual commission, currently a residual of up to 1.0% of the current value of
the respective accounts for which they are the account executives of record.
    
 
   
    With respect to Class D shares other than shares held by participants in
InterCapital's mutual fund asset allocation program, the Investment Manager
compensates DWR's account executives by paying them, from its own funds,
commissions for the sale of Class D shares, currently a gross sales credit of up
to 1.0% of the amount sold. There is a chargeback of 100% of the amount paid if
the Class D shares are redeemed in the first year and a chargeback of 50% of the
amount paid if the Class D shares are redeemed in the second year after
purchase. The Investment Manager also compensates DWR's account executives by
paying them, from its own funds, an annual residual commission, currently a
residual of up to 0.10% of the current value of the respective accounts for
which they are the account executives of record (not including accounts of
participants in the InterCapital mutual fund asset allocation program).
    
 
   
    The gross sales credit is a charge which reflects commissions paid by DWR to
its account executives and DWR's Fund associated distribution-related expenses,
including sales compensation and overhead. The distribution fee that the
Distributor receives from the Fund under the Plan, in effect, offsets
distribution expenses incurred on behalf of the Fund, and in the case of Class B
shares, opportunity costs, such as the gross sales credit and an assumed
interest charge thereon ("carrying charge"). In the Distributor's reporting of
distribution expenses to the Fund, in the case of Class B shares, such assumed
interest (computed at the "broker's call rate") has been calculated on the gross
sales credit as it is reduced by amounts received by the Distributor under the
Plan and any contingent deferred sales charges received by the Distributor upon
redemption of shares of the Fund. No other interest charge is included as a
distribution expense in the Distributor's calculation of its distribution costs
for this purpose. The broker's call rate is the interest rate charged to
securities brokers on loans secured by exchange-listed securities.
    
 
   
    The Fund paid 100% of the $1,910,070 accrued under the Plan for the fiscal
year ended February 28, 1997 to the Distributor. The Distributor and DWR
estimate that they have spent, pursuant to the Plan, $25,159,477 on behalf of
the Fund since the inception of the Plan. It is estimated that this amount was
spent in approximately the following ways: (i) 12.23% ($3,076,810) --
advertising and promotional expenses; (ii) 1.32% ($333,300) -- printing of
prospectuses for distribution to other than current shareholders; and (iii)
86.45% ($21,749,367) -- other expenses, including the gross sales credit and the
carrying charge, of which 11.58% ($2,518,440) represents carrying charges,
35.69% ($7,761,602) represents commission credits to DWR branch offices for
payments of commissions to account executives and 52.73% ($11,469,325)
represents overhead and other branch office distribution-related expenses. These
amounts represent amounts paid by Class B only; there were no Class A or Class C
shares outstanding on such date.
    
 
   
    The Fund is authorized to reimburse expenses incurred or to be incurred in
promoting the distribution of the Fund's Class A and Class C shares and in
servicing shareholder accounts. Reimbursement will be made through payments at
the end of each month. The amount of each monthly payment may in no event exceed
an amount equal to a payment at the annual rate of 0.25%, in the case of Class
A, and 1.0%, in the case of Class C, of the average net assets of the respective
Class during the month. No interest or other financing charges, if any, incurred
on any distribution expenses on behalf of Class A and Class C will be
reimbursable under the Plan. With respect to Class A, in the case of all
expenses other than expenses representing the service fee, and, with respect to
Class C, in the case of all expenses other than expenses representing a gross
sales credit or a residual to account executives, such amounts shall be
determined at the beginning of each calendar quarter by the Directors, including
a majority of the Independent 12b-1 Directors. Expenses representing the service
fee (for Class A) or a gross sales credit or a residual to account executives
(for Class C)
    
 
                                       28
<PAGE>
   
may be reimbursed without prior determination. In the event that the Distributor
proposes that monies shall be reimbursed for other than such expenses, then in
making quarterly determinations of the amounts that may be reimbursed by the
Fund, the Distributor will provide and the Directors will review a quarterly
budget of projected distribution expenses to be incurred on behalf of the Fund,
together with a report explaining the purposes and anticipated benefits of
incurring such expenses. The Directors will determine which particular expenses,
and the portions thereof, that may be borne by the Fund, and in making such a
determination shall consider the scope of the Distributor's commitment to
promoting the distribution of the Fund's Class A and Class C shares.
    
 
   
    At any given time, the expenses of distributing shares of the Fund may be
more or less than the total of (i) the payments made by the Fund pursuant to the
Plan and (ii) the proceeds of contingent deferred sales charges paid by
investors upon redemption of shares. The Distributor has advised the Fund that
in the case of Class B shares, the excess distribution expenses, including the
carrying charge designed to approximate the opportunity costs incurred by DWR
which arise from it having advanced monies without having received the amount of
any sales charges imposed at the time of sale of the Fund's Class B shares,
totalled $6,803,658 as of February 28, 1997, which amount constitutes 2.74% of
the Fund's net assets on such date. Because there is no requirement under the
Plan that the Distributor be reimbursed for all distribution expenses with
respect to Class B shares or any requirement that the Plan be continued from
year to year, this excess amount does not constitute a liability of the Fund.
Although there is no legal obligation for the Fund to pay expenses incurred by
the Distributor in excess of payments made to the Distributor under the Plan and
the proceeds of contingent deferred sales charges paid by investors upon
redemption of shares, if for any reason the Plan is terminated, the Directors
will consider at that time the manner in which to treat such expenses. Any
cumulative expenses incurred, but not yet recovered through distribution fees or
contingent deferred sales charges, may or may not be recovered through future
distribution fees or contingent deferred sales charges.
    
 
    No interested person of the Fund nor any Director of the Fund who is not an
interested person of the Fund, as defined in the Act, had any direct or indirect
financial interest in the operation of the Plan except to the extent that the
Distributor, InterCapital, DWSC, DWR or certain of their employees may be deemed
to have such interest as a result of benefits derived from the successful
operation of the Plan or as a result of receiving a portion of the amounts
expended thereunder by the Fund.
 
   
    Under its terms, the Plan will continue in effect from year to year,
provided such continuance is approved annually by a vote of the Directors in the
manner described above. Prior to the Board's approval of amendments to the Plan
to reflect the multiple-class structure for the Fund, the most recent
continuance of the Plan for one year, until April 30, 1998, was approved by the
Board of Directors of the Fund, including a majority of the Independent 12b-1
Directors, at a Board meeting held on April 24, 1997. Prior to approving the
continuation of the Plan, the Board requested and received from DWR and reviewed
all the information which it deemed necessary to arrive at an informed
determination. In making their determination to continue the Plan, the Directors
considered: (1) the Fund's experience under the Plan and whether such experience
indicates that the Plan is operating as anticipated; (2) the benefits the Fund
had obtained, was obtaining and would be likely to obtain under the Plan; and
(3) what services had been provided and were continuing to be provided under the
Plan by the Distributor to the Fund and its stockholders. Based upon their
review, the Directors of the Fund, including each of the Independent 12b-1
Directors, determined that continuation of the Plan would be in the best
interest of the Fund and would have a reasonable likelihood of continuing to
benefit the Fund and its shareholders. In the Directors' quarterly review of the
Plan, they will consider its continued appropriateness and the level of
compensation provided therein.
    
 
   
    The Plan may not be amended to increase materially the amount to be spent
for the services described therein without approval of the shareholders of the
affected Class or Classes of the Fund, and all material amendments of the Plan
must also be approved by the Directors in the manner described above. The Plan
may be terminated at any time, without payment of any penalty, by vote of a
majority of the Directors who are not interested persons of the Fund and who
have no direct or indirect financial interest in the operation of the Plan, or
by a vote of a majority of the outstanding voting securities of the Fund (as
defined in the Act) on not more than thirty days' written notice to any other
party to the Plan. So long as the Plan is in effect, the election and nomination
of Independent Directors shall be committed to the discretion of the Independent
Directors.
    
 
                                       29
<PAGE>
   
DETERMINATION OF NET ASSET VALUE
    
- --------------------------------------------------------------------------------
 
   
    The net asset value per share for each Class of shares of the Fund is
determined once daily at 4:00 p.m., New York time (or, on days when the New York
Stock Exchange closes prior to 4 p.m., at such earlier time), on each day that
the New York Stock Exchange is open. The New York Stock Exchange currently
observes the following holidays: New Year's Day, Reverend Dr. Martin Luther
King, Jr. Day, Presidents' Day, Good Friday, Memorial Day, Independence Day,
Labor Day, Thanksgiving Day, and Christmas Day.
    
 
    As stated in the Prospectus, short-term debt securities with remaining
maturities of 60 days or less at the time of purchase are valued at amortized
cost, unless the Directors determine such does not reflect the securities'
market value, in which case these securities will be valued at their fair value
as determined by the Trustees. Other short-term debt securities will be valued
on a mark-to-market basis until such time as they reach a remaining maturity of
60 days, whereupon they will be valued at amortized cost using their value on
the 61st day unless the Directors determine such does not reflect the
securities' market value, in which case these securities will be valued at their
fair value as determined by the Directors. Listed options on debt securities are
valued at the latest sale price on the exchange on which they are listed unless
no sales of such options have taken place that day, in which case they will be
valued at the mean between their latest bid and asked prices. Unlisted options
on debt securities and all options on equity securities are valued at the mean
between their latest bid and asked prices. Futures are valued at the latest sale
price on the commodities exchange on which they trade unless the Directors
determine that such price does not reflect their market value, in which case
they will be valued at their fair value as determined by the Directors. All
other securities and other assets are valued at their fair value as determined
in good faith under procedures established by and under the supervision of the
Directors.
 
   
PURCHASE OF FUND SHARES
    
- --------------------------------------------------------------------------------
 
   
    As discussed in the Prospectus, the Fund offers four Classes of shares as
follows:
    
 
   
INITIAL SALES CHARGE ALTERNATIVE--CLASS A SHARES
    
 
   
    Class A shares are sold to investors with an initial sales charge that
declines to zero for larger purchases; however, Class A shares sold without an
initial sales charge are subject to a contingent deferred sales charge ("CDSC")
of 1.0% if redeemed within one year of purchase, except in the circumstances
discussed in the Prospectus.
    
 
   
    RIGHT OF ACCUMULATION.  As discussed in the Prospectus, investors may
combine the current value of shares purchased in separate transactions for
purposes of benefitting from the reduced sales charges available for purchases
of shares of the Fund totalling at least $25,000 in net asset value. For
example, if any person or entity who qualifies for this privilege holds Class A
shares of the Fund and/or other Dean Witter Funds that are multiple class funds
("Dean Witter Multi-Class Funds") or shares of other Dean Witter Funds sold with
a front-end sales charge purchased at a price including a front-end sales charge
having a current value of $5,000, and purchases $20,000 of additional shares of
the Fund, the sales charge applicable to the $20,000 purchase would be 4.75% of
the offering price.
    
 
   
    The Distributor must be notified by the selected broker-dealer or the
shareholder at the time a purchase order is placed that the purchase qualifies
for the reduced charge under the Right of Accumulation. Similar notification
must be made in writing by the selected broker-dealer or shareholder when such
an order is placed by mail. The reduced sales charge will not be granted if: (a)
such notification is not furnished at the time of the order; or (b) a review of
the records of the Distributor or Dean Witter Trust Company (the "Transfer
Agent") fails to confirm the investor's represented holdings.
    
 
   
    LETTER OF INTENT.  As discussed in the Prospectus, reduced sales charges are
available to investors who enter into a written Letter of Intent providing for
the purchase, within a thirteen-month period, of Class A shares of the Fund from
the Distributor or from a single Selected Broker-Dealer.
    
 
   
    A Letter of Intent permits an investor to establish a total investment goal
to be achieved by any number of purchases over a thirteen-month period. Each
purchase of Class A shares made during the period will receive
    
 
                                       30
<PAGE>
   
the reduced sales commission applicable to the amount represented by the goal,
as if it were a single purchase. A number of shares equal in value to 5% of the
dollar amount of the Letter of Intent will be held in escrow by the Transfer
Agent, in the name of the shareholder. The initial purchase under a Letter of
Intent must be equal to at least 5% of the stated investment goal.
    
 
   
    The Letter of Intent does not obligate the investor to purchase, nor the
Fund to sell, the indicated amount. In the event the Letter of Intent goal is
not achieved within the thirteen-month period, the investor is required to pay
the difference between the sales charge otherwise applicable to the purchases
made during this period and sales charges actually paid. Such payment may be
made directly to the Distributor or, if not paid, the Distributor is authorized
by the shareholder to liquidate a sufficient number of his or her escrowed
shares to obtain such difference.
    
 
   
    If the goal is exceeded and purchases pass the next sales charge level, the
sales charge on the entire amount of the purchase that results in passing that
level and on subsequent purchases will be subject to further reduced sales
charges in the same manner as set forth above under "Right of Accumulation," but
there will be no retroactive reduction of sales charges on previous purchases.
For the purpose of determining whether the investor is entitled to a further
reduced sales charge applicable to purchases at or above a sales charge level
which exceeds the stated goal of a Letter of Intent, the cumulative current net
asset value of any shares owned by the investor in any other Dean Witter Funds
held by the shareholder which were previously purchased at a price including a
front-end sales charge (including shares of the Fund and other Dean Witter Funds
acquired in exchange for those shares, and including in each case shares
acquired through reinvestment of dividends and distributions) will be added to
the cost or net asset value of shares of the Fund owned by the investor.
However, shares of "Exchange Funds" (see "Shareholder Services--Exchange
Privilege") and the purchase of shares of other Dean Witter Funds will not be
included in determining whether the stated goal of a Letter of Intent has been
reached.
    
 
   
    At any time while a Letter of Intent is in effect, a shareholder may, by
written notice to the Distributor, increase the amount of the stated goal. In
that event, only shares purchased during the previous 90-day period and still
owned by the shareholder will be included in the new sales charge reduction. The
5% escrow and minimum purchase requirements will be applicable to the new stated
goal. Investors electing to purchase shares of the Fund pursuant to a Letter of
Intent should carefully read such Letter of Intent.
    
 
   
CONTINGENT DEFERRED SALES CHARGE ALTERNATIVE--CLASS B SHARES
    
 
   
    Class B shares are sold without an initial sales charge but are subject to a
CDSC payable upon most redemptions within six years after purchase. As stated in
the Prospectus, a CDSC will be imposed on any redemption by an investor if after
such redemption the current value of the investor's Class B shares of the Fund
is less than the dollar amount of all payments by the shareholder for the
purchase of Class B shares during the preceding six years (or, in the case of
shares held by certain employer-sponsored benefit plans, three years). However,
no CDSC will be imposed to the extent that the net asset value of the shares
redeemed does not exceed: (a) the current net asset value of shares purchased
more than six years (or, in the case of shares held by certain
employer-sponsored benefit plans, three years) prior to the redemption, plus (b)
the current net asset value of shares purchased through reinvestment of
dividends or distributions of the Fund or another Dean Witter Fund (see
"Shareholder Services--Targeted Dividends"), plus (c) the current net asset
value of shares acquired in exchange for (i) shares of Dean Witter front-end
sales charge funds, or (ii) shares of other Dean Witter Funds for which shares
of front-end sales charge funds have been exchanged (see "Shareholder
Services--Exchange Privilege"), plus (d) increases in the net asset value of the
investor's shares above the total amount of payments for the purchase of Fund
shares made during the preceding six (three) years. The CDSC will be paid to the
Distributor.
    
 
   
    In determining the applicability of the CDSC to each redemption, the amount
which represents an increase in the net asset value of the investor's shares
above the amount of the total payments for the purchase of shares within the
last six years (or, in the case of shares held by certain employer-sponsored
benefit plans, three years) will be redeemed first. In the event the redemption
amount exceeds such increase in value, the next portion of the amount redeemed
will be the amount which represents the net asset value of the investor's shares
purchased more than six (three) years prior to the redemption and/or shares
purchased
    
 
                                       31
<PAGE>
   
through reinvestment of dividends or distributions and/or shares acquired in
exchange for shares of Dean Witter front-end sales charge funds, or for shares
of other Dean Witter funds for which shares of front-end sales charge funds have
been exchanged. A portion of the amount redeemed which exceeds an amount which
represents both such increase in value and the value of shares purchased more
than six years (or, in the case of shares held by certain employer-sponsored
benefit plans, three years) prior to the redemption and/or shares purchased
through reinvestment of dividends or distributions and/or shares acquired in the
above-described exchanges will be subject to a CDSC.
    
 
   
    The amount of the CDSC, if any, will vary depending on the number of years
from the time of payment for the purchase of Class B shares of the Fund until
the time of redemption of such shares. For purposes of determining the number of
years from the time of any payment for the purchase of shares, all payments made
during a month will be aggregated and deemed to have been made on the last day
of the month. The following table sets forth the rates of the CDSC applicable to
most Class B shares of the Fund:
    
 
   
<TABLE>
<CAPTION>
                              YEAR SINCE                                    CDSC AS A
                               PURCHASE                                   PERCENTAGE OF
                             PAYMENT MADE                                AMOUNT REDEEMED
- ----------------------------------------------------------------------  -----------------
<S>                                                                     <C>
First.................................................................         5.0%
Second................................................................         4.0%
Third.................................................................         3.0%
Fourth................................................................         2.0%
Fifth.................................................................         2.0%
Sixth.................................................................         1.0%
Seventh and thereafter................................................        None
</TABLE>
    
 
   
    The following table sets forth the rates of the CDSC applicable to Class B
shares of the Fund held by 401(k) plans or other employer-sponsored plans
qualified under Section 401(a) of the Internal Revenue Code for which DWTC or
DWTFSB serves as Trustee or the 401(k) Support Services Group of DWR serves as
recordkeeper and whose accounts are opened on or after July 28, 1997:
    
 
   
<TABLE>
<CAPTION>
                              YEAR SINCE                                    CDSC AS A
                               PURCHASE                                   PERCENTAGE OF
                             PAYMENT MADE                                AMOUNT REDEEMED
- ----------------------------------------------------------------------  -----------------
<S>                                                                     <C>
First.................................................................         2.0%
Second................................................................         2.0%
Third.................................................................         1.0%
Fourth and thereafter.................................................        None
</TABLE>
    
 
   
    In determining the rate of the CDSC, it will be assumed that a redemption is
made of shares held by the investor for the longest period of time within the
applicable six-year or three-year period. This will result in any such CDSC
being imposed at the lowest possible rate. The CDSC will be imposed, in
accordance with the table shown above, on any redemptions within six years (or,
in the case of shares held by certain employer-sponsored benefit plans, three
years) of purchase which are in excess of these amounts and which redemptions do
not qualify for waiver of the CDSC, as described in the Prospectus.
    
 
   
LEVEL LOAD ALTERNATIVE--CLASS C SHARES
    
 
   
    Class C shares are sold without a sales charge but are subject to a CDSC of
1.0% on most redemptions made within one year after purchase, except in the
circumstances discussed in the Prospectus.
    
 
   
NO LOAD ALTERNATIVE--CLASS D SHARES
    
 
   
    Class D shares are offered without any sales charge on purchase or
redemption. Class D shares are offered only to those persons meeting the
qualifications set forth in the Prospectus.
    
 
SHAREHOLDER SERVICES
- --------------------------------------------------------------------------------
 
   
    Upon the purchase of shares of the Fund, a Shareholder Investment Account is
opened for the investor on the books of the Fund and maintained by the Transfer
Agent. This is an open account in which shares
    
 
                                       32
<PAGE>
owned by the investor are credited by the Transfer Agent in lieu of issuance of
a stock certificate. If a stock certificate is desired, it must be requested in
writing for each transaction. Certificates are issued only for full shares and
may be redeposited in the account at any time. There is no charge to the
investor for issuance of a certificate. Whenever a shareholder instituted
transaction takes place in the Shareholder Investment Account, the shareholder
will be mailed a written confirmation of the transaction from the Fund or from
DWR or other selected broker-dealer.
 
   
    AUTOMATIC INVESTMENT OF DIVIDENDS AND DISTRIBUTIONS.  As stated in the
Prospectus, all income dividends and capital gains distributions are
automatically paid in full and fractional shares of the applicable Class of the
Fund, unless the shareholder requests that they be paid in cash. Each purchase
of shares of the Fund is made upon the condition that the Transfer Agent is
thereby automatically appointed as agent of the investor to receive all
dividends and capital gains distributions on shares owned by the investor. Such
dividends and distributions will be paid, at the net asset value per share, in
shares of the applicable Class of the Fund (or in cash if the shareholder so
requests) as of the close of business on the record date. At any time an
investor may request the Transfer Agent, in writing, to have subsequent
dividends and/or capital gains distributions paid to him or her in cash rather
than shares. To assure sufficient time to process the change, such request
should be received by the Transfer Agent at least five business days prior to
the record date of the dividend or distribution. In the case of recently
purchased shares for which registration instructions have not been received on
the record date, cash payments will be made to DWR or other selected
broker-dealer, and will be forwarded to the shareholder, upon the receipt of
proper instructions.
    
 
   
    TARGETED DIVIDENDS-SM-.  In states where it is legally permissible,
shareholders may also have all income dividends and capital gains distributions
automatically invested in shares of any Class of an open-end Dean Witter Fund
other than Dean Witter Natural Resource Development Securities or in another
Class of Dean Witter Natural Resource Development Securities. Such investment
will be made as described above for automatic investment in shares of the
applicable Class of the Fund, at the net asset value per share of the selected
Dean Witter Fund as of the close of business on the payment date of the dividend
or distribution and will begin to earn dividends, if any, in the selected Dean
Witter Fund the next business day. To participate in the Targeted Dividends
program, shareholders should contact their DWR or other selected broker-dealer
account executive or the Transfer Agent. Shareholders of the Fund must be
shareholders of the selected Class of the Dean Witter Fund targeted to receive
investments from dividends at the time they enter the Targeted Dividends
program. Investors should review the prospectus of the targeted Dean Witter Fund
before entering the program.
    
 
   
    EASYINVEST-SM-.  Shareholders may subscribe to EasyInvest, an automatic
purchase plan which provides for any amount from $100 to $5,000 to be
transferred automatically from a checking or savings account or following
redemption of shares of a Dean Witter money market fund, on a semi-monthly,
monthly or quarterly basis, to the Transfer Agent for investment in shares of
the Fund. Shares purchased through EasyInvest will be added to the shareholder's
existing account at the net asset value calculated the same business day the
transfer of funds is effected. For further information or to subscribe to
EasyInvest, shareholders should contact their DWR or other selected
broker-dealer account executive or the Transfer Agent.
    
 
   
    INVESTMENT OF DIVIDENDS OR DISTRIBUTIONS RECEIVED IN CASH.  Any shareholder
who receives a cash payment representing a dividend or distribution may invest
such dividend or distribution in shares of the applicable Class at net asset
value, without the imposition of a CDSC upon redemption, by returning the check
or the proceeds to the Transfer Agent within thirty days after the payment date.
If the shareholder returns the proceeds of a dividend or distribution, such
funds must be accompanied by a signed statement indicating that the proceeds
constitute a dividend or distribution to be invested. Such investment will be
made at the net asset value per share next determined after receipt of the check
or proceeds by the Transfer Agent.
    
 
   
    SYSTEMATIC WITHDRAWAL PLAN.  As discussed in the Prospectus, a withdrawal
plan (the "Withdrawal Plan") is available for shareholders who own or purchase
shares of the Fund having a minimum value of $10,000 based upon the then current
net asset value. The Withdrawal Plan provides for monthly or quarterly (March,
June, September and December) checks in any dollar amount, not less than $25, or
in any whole percentage of the account balance, on an annualized basis. Any
applicable CDSC will be imposed on shares redeemed
    
 
                                       33
<PAGE>
   
under the Withdrawal Plan (see "Purchase of Fund Shares"). Therefore, any
shareholder participating in the Withdrawal Plan will have sufficient shares
redeemed from his or her account so that the proceeds (net of any applicable
CDSC) to the shareholder will be the designated monthly or quarterly amount.
    
 
    The Transfer Agent acts as agent for the shareholder in tendering to the
Fund for redemption sufficient full and fractional shares to provide the amount
of the periodic withdrawal payment designated in the application. The shares
will be redeemed at their net asset value determined, at the shareholder's
option, on the tenth or twenty-fifth day (or next following business day) of the
relevant month or quarter and normally a check for the proceeds will be mailed
by the Transfer Agent, or amounts credited to a shareholder's DWR or other
broker-dealer brokerage account, within five business days after the date of
redemption. The Withdrawal Plan may be terminated at any time by the Fund.
 
    Withdrawal Plan payments should not be considered as dividends, yields or
income. If periodic Withdrawal Plan payments continuously exceed net investment
income and net capital gains, the shareholder's original investment will be
correspondingly reduced and ultimately exhausted.
 
   
    Each withdrawal constitutes a redemption of shares and any gain or loss
realized must be recognized for federal income tax purposes. Although the
shareholder may make additional investments of $2,500 or more under the
Withdrawal Plan, withdrawals made concurrently with purchases of additional
shares may be inadvisable because of sales charges which may be applicable to
purchases or redemptions of shares (see "Purchase of Fund Shares").
    
 
    Any shareholder who wishes to have payments under the Withdrawal Plan made
to a third party or sent to an address other than the one listed on the account
must send complete written instructions to the Transfer Agent to enroll in the
Withdrawal Plan. The shareholder's signature on such instructions must be
guaranteed by an eligible guarantor acceptable to the Transfer Agent
(shareholders should contact the Transfer Agent for a determination as to
whether a particular institution is such an eligible guarantor). A shareholder
may, at any time, change the amount and interval of withdrawal payments through
his or her account executive or by written notification to the Transfer Agent.
In addition, the party and/or the address to which checks are mailed may be
changed by written notification to the Transfer Agent, with signature guarantees
required in the manner described above. The shareholder may also terminate the
Withdrawal Plan at any time by written notice to the Transfer Agent. In the
event of such termination, the account will be continued as a regular
shareholder investment account. The shareholder may also redeem all or part of
the shares held in the Withdrawal Plan account (see "Redemptions and
Repurchases") at any time.
 
   
    DIRECT INVESTMENTS THROUGH TRANSFER AGENT.  As discussed in the Prospectus,
shareholders may make additional investments in any Class of shares of the Fund
for which they qualify at any time by sending a check in any amount, not less
than $100, payable to Dean Witter Natural Resource Development Securities Inc.,
and indicating the selected Class, directly to the Fund's Transfer Agent. In the
case of Class A shares, after deduction of any applicable sales charge, the
balance will be applied to the purchase of Fund shares, and, in the case of
shares of the other Classes, the entire amount will be applied to the purchase
of Fund shares, at the net asset value per share next computed after receipt of
the check or purchase payment by the Transfer Agent. The shares so purchased
will be credited to the investor's account.
    
 
EXCHANGE PRIVILEGE
 
   
    As discussed in the Prospectus, the Fund makes available to its shareholders
an Exchange Privilege whereby shareholders of the Fund may exchange their shares
for shares of the same Class of shares of any other Dean Witter Multi-Class Fund
without the imposition of any exchange fee. Shares may also be exchanged for
shares of any of the following funds: Dean Witter Short-Term U.S. Treasury
Trust, Dean Witter Intermediate Term U.S. Treasury Trust, Dean Witter Limited
Term Municipal Trust, Dean Witter Short-Term Bond Fund, and for five Dean Witter
Funds which are money market funds (the foregoing nine funds are hereinafter
referred to as the "Exchange Funds"). Class A shares may also be exchanged for
shares of Dean Witter Multi-State Municipal Series Trust and Dean Witter Hawaii
Municipal Trust, which are Dean Witter Funds sold with a front-end sales charge
("FSC Funds"). Class B shares may also be exchanged for shares of Dean Witter
Global Short-Term Income Fund Inc., Dean Witter High Income Securities and Dean
Witter National
    
 
                                       34
<PAGE>
   
Municipal Trust, which are Dean Witter Funds offered with a CDSC ("CDSC Funds").
Exchanges may be made after the shares of the Fund acquired by purchase (not by
exchange or dividend reinvestment) have been held for thirty days. There is no
waiting period for exchanges of shares acquired by exchange or dividend
reinvestment. An exchange will be treated for federal income tax purposes the
same as a repurchase or redemption of shares, on which the shareholder may
realize a capital gain or loss.
    
 
    Any new account established through the Exchange Privilege will have the
same registration and cash dividend or dividend reinvestment plan as the present
account, unless the Transfer Agent receives written notification to the
contrary. For telephone exchanges, the exact registration of the existing
account and the account number must be provided.
 
    Any shares held in certificate form cannot be exchanged but must be
forwarded to the Transfer Agent and deposited into the shareholder's account
before being eligible for exchange. (Certificates mailed in for deposit should
not be endorsed.)
 
   
    As described below, and in the Prospectus under the caption "Purchase of
Fund Shares," a CDSC may be imposed upon a redemption, depending on a number of
factors, including the number of years from the time of purchase until the time
of redemption or exchange ("holding period"). When shares of a Dean Witter
Multi-Class Fund or any CDSC Fund are exchanged for shares of an Exchange Fund,
the exchange is executed at no charge to the shareholder, without the imposition
of the CDSC at the time of the exchange. During the period of time the
shareholder remains in the Exchange Fund (calculated from the last day of the
month in which the Exchange Fund shares were acquired), the holding period or
"year since purchase payment made" is frozen. When shares are redeemed out of
the Exchange Fund, they will be subject to a CDSC which would be based upon the
period of time the shareholder held shares in a Dean Witter Multi-Class Fund or
in a CDSC Fund. However, in the case of shares of the Fund exchanged into an
Exchange Fund on or after April 23, 1990, upon a redemption of shares which
results in a CDSC being imposed, a credit (not to exceed the amount of the CDSC)
will be given in an amount equal to the Exchange Fund 12b-1 distribution fees
incurred on or after that date which are attributable to those shares.
Shareholders acquiring shares of an Exchange Fund pursuant to this exchange
privilege may exchange those shares back into a Dean Witter Multi-Class Fund or
a CDSC Fund from the Exchange Fund, with no CDSC being imposed on such exchange.
The holding period previously frozen when shares were first exchanged for shares
of the Exchange Fund resumes on the last day of the month in which shares of a
Dean Witter Multi-Class Fund or of a CDSC Fund are reacquired. A CDSC is imposed
only upon an ultimate redemption, based upon the time (calculated as described
above) the shareholder was invested in a Dean Witter Multi-Class Fund or in a
CDSC Fund. In the case of exchanges of Class A shares which are subject to a
CDSC, the holding period also includes the time (calculated as described above)
the shareholder was invested in a FSC Fund.
    
 
   
    When shares initially purchased in a Dean Witter Multi-Class Fund or in a
CDSC Fund are exchanged for shares of a CDSC Fund, shares of a FSC Fund, or
shares of an Exchange Fund, the date of purchase of the shares of the fund
exchanged into, for purposes of the CDSC upon redemption, will be the last day
of the month in which the shares being exchanged were originally purchased. In
allocating the purchase payments between funds for purposes of the CDSC the
amount which represents the current net asset value of shares at the time of the
exchange which were (i) purchased more than one, three or six years (depending
on the CDSC schedule applicable to the shares) prior to the exchange, (ii)
originally acquired through reinvestment of dividends or distributions and (iii)
acquired in exchange for shares of FSC Funds, or for shares of other Dean Witter
Funds for which shares of FSC Funds have been exchanged (all such shares called
"Free Shares"), will be exchanged first. Shares of Dean Witter American Value
Fund (formerly Dean Witter Industry-Valued Securities Inc.) acquired prior to
April 30, 1984, shares of the Fund and Dean Witter Dividend Growth Securities
Inc. acquired prior to July 2, 1984, and shares of Dean Witter Strategist Fund
acquired prior to November 8, 1989, are also considered Free Shares and will be
the first Free Shares to be exchanged. After an exchange, all dividends earned
on shares in an Exchange Fund will be considered Free Shares. If the exchanged
amount exceeds the value of such Free Shares, an exchange is made, on a
block-by-block basis, of non-Free Shares held for the longest period of time
(except that, with respect to Class B shares, if shares held for identical
periods of time but subject to different CDSC schedules are held in the same
Exchange Privilege account, the shares of that block that are subject to a lower
CDSC rate will be exchanged prior to the
    
 
                                       35
<PAGE>
   
shares of that block that are subject to a higher CDSC rate). Shares equal to
any appreciation in the value of non-Free Shares exchanged will be treated as
Free Shares, and the amount of the purchase payments for the non-Free Shares of
the fund exchanged into will be equal to the lesser of (a) the purchase payments
for, or (b) the current net asset value of, the exchanged non-Free Shares. If an
exchange between funds would result in exchange of only part of a particular
block of non-Free Shares, then shares equal to any appreciation in the value of
the block (up to the amount of the exchange) will be treated as Free Shares and
exchanged first, and the purchase payment for that block will be allocated on a
pro rata basis between the non-Free Shares of that block to be retained and the
non-Free Shares to be exchanged. The prorated amount of such purchase payment
attributable to the retained non-Free Shares will remain as the purchase payment
for such shares, and the amount of purchase payment for the exchanged non-Free
Shares will be equal to the lesser of (a) the prorated amount of the purchase
payment for, or (b) the current net asset value of, those exchanged non-Free
Shares. Based upon the procedures described in the Prospectus under the caption
"Purchase of Fund Shares," any applicable CDSC will be imposed upon the ultimate
redemption of shares of any fund, regardless of the number of exchanges since
those shares were originally purchased.
    
 
    With respect to the redemption or repurchase of shares of the Fund, the
application of proceeds to the purchase of new shares in the Fund or any other
of the funds and the general administration of the Exchange Privilege, the
Transfer Agent acts as agent for the Distributor and for the shareholder's
selected broker-dealer, if any, in the performance of such functions.
 
    With respect to exchanges, redemptions or repurchases, the Transfer Agent
shall be liable for its own negligence and not for the default or negligence of
its correspondents or for losses in transit. The Fund shall not be liable for
any default or negligence of the Transfer Agent, the Distributor or any selected
broker-dealer.
 
    The Distributor and any selected broker-dealer have authorized and appointed
the Transfer Agent to act as their agent in connection with the application of
proceeds of any redemption of Fund shares to the purchase of shares of any other
fund and the general administration of the Exchange Privilege. No commission or
discounts will be paid to the Distributor or any selected broker-dealer for any
transactions pursuant to this Exchange Privilege.
 
   
    Exchanges are subject to the minimum investment requirement and any other
conditions imposed by each fund. (The minimum initial investment for the
Exchange Privilege account of each Class is $5,000 for Dean Witter Liquid Asset
Fund Inc., Dean Witter Tax-Free Daily Income Trust, Dean Witter New York
Municipal Money Market Trust and Dean Witter California Tax-Free Daily Income
Trust although those funds may, at their discretion, accept initial investments
of as low as $1,000. The minimum initial investment for the Exchange Privilege
account of each Class for Dean Witter Short-Term U.S. Treasury Trust is $10,000,
although that fund, in its discretion, may accept initial purchases of as low as
$5,000. The minimum investment for the Exchange Privilege account of each Class
for Dean Witter Special Value Fund is $5,000. The minimum initial investment for
the Exchange Privilege account of each Class for all other Dean Witter Funds for
which the Exchange Privilege is available is $1,000.) Upon exchange into an
Exchange Fund, the shares of that fund will be held in a special Exchange
Privilege Account separately from accounts of those shareholders who have
acquired their shares directly from that fund. As a result, certain services
normally available to shareholders of those funds, including the check writing
feature, will not be available for funds held in that account.
    
 
    The Fund and each of the other Dean Witter Funds may limit the number of
times this Exchange Privilege may be exercised by any investor within a
specified period of time. Also, the Exchange Privilege may be terminated or
revised at any time by the Fund and/or any of the Dean Witter Funds for which
shares of the Fund have been exchanged, upon such notice as may be required by
applicable regulatory agencies (presently sixty days for termination or material
revision), provided that six months' prior written notice of termination will be
given to the shareholders who hold shares of Exchange Funds, pursuant to this
Exchange Privilege and provided further that the Exchange Privilege may be
terminated or materially revised without notice at times (a) when the New York
Stock Exchange is closed for other than customary weekends and holidays, (b)
when trading on that Exchange is restricted, (c) when an emergency exists as a
result of which disposal by the Fund of securities owned by it is not reasonably
practicable or it is not reasonably practicable for the Fund fairly to determine
the value of its net assets, (d) during any other period when the Securities and
 
                                       36
<PAGE>
Exchange Commission by order so permits (provided that applicable rules and
regulations of the Securities and Exchange Commission shall govern as to whether
the conditions prescribed in (b) or (c) exist) or (e) if the Fund would be
unable to invest amounts effectively in accordance with its investment
objective, policies and restrictions.
 
    The current prospectus for each fund describes its investment objective(s)
and policies, and shareholders should obtain a copy and examine it carefully
before investing. An exchange will be treated for federal income tax purposes
the same as a repurchase or redemption of shares, on which the shareholder may
realize a capital gain or loss. However, the ability to deduct capital losses on
an exchange may be limited in situations where there is an exchange of shares
within ninety days after the shares are purchased. The Exchange Privilege is
only available in states where an exchange may legally be made.
 
    For further information regarding the Exchange Privilege, shareholders
should contact their DWR or other selected broker-dealer account executive or
the Transfer Agent.
 
REDEMPTIONS AND REPURCHASES
- --------------------------------------------------------------------------------
 
   
    REDEMPTION.  As stated in the Prospectus, shares of each Class of the Fund
can be redeemed for cash at any time at the net asset value per share next
determined; however, such redemption proceeds will be reduced by the amount of
any applicable CDSC. If shares are held in a shareholder's account without a
share certificate, a written request for redemption to the Fund's Transfer Agent
at P.O. Box 983, Jersey City, NJ 07303 is required. If certificates are held by
the shareholder, the shares may be redeemed by surrendering the certificates
with a written request for redemption. The share certificate, or an accompanying
stock power, and the request for redemption must be signed by the shareholder or
shareholders exactly as the shares are registered. Each request for redemption,
whether or not accompanied by a share certificate, must be sent to the Fund's
Transfer Agent, which will redeem the shares at their net asset value next
computed (see "Purchase of Fund Shares" in the Prospectus) after it receives the
request, and certificate, if any, in good order. Any redemption request received
after such computation will be redeemed at the next determined net asset value.
    
 
   
    Whether certificates are held by the shareholder or shares are held in a
shareholder's account, if the proceeds are to be paid to any person other than
the record owner, or if the proceeds are to be paid to a corporation (other than
the Distributor or a selected broker-dealer for the account of the shareholder),
partnership, trust or fiduciary, or sent to the shareholder at an address other
than the registered address, signatures must be guaranteed by an eligible
guarantor acceptable to the Transfer Agent (shareholders should contact the
Transfer Agent for a determination as to whether a particular institution is
such an eligible guarantor). A stock power may be obtained from any dealer or
commercial bank. The Fund may change the signature guarantee requirements from
time to time upon notice to shareholders, which may be by means of a supplement
to the prospectus or a new prospectus.
    
 
   
    REPURCHASE.  As stated in the Prospectus, DWR and other selected
broker-dealers are authorized to repurchase shares represented by a share
certificate which is delivered to any of their offices. Shares held in a
shareholder's account without a share certificate may also be repurchased by DWR
and other selected broker-dealers upon the telephonic request of the
shareholder. The repurchase price is the net asset value next computed after
such purchase order is received by DWR or other selected broker-dealer reduced
by any applicable CDSC.
    
 
   
    PAYMENT FOR SHARES REDEEMED OR REPURCHASED.  As discussed in the Prospectus,
payment for shares of any Class presented for repurchase or redemption will be
made by check within seven days after receipt by the Transfer Agent of the
certificate and/or written request in good order. Such payment may be postponed
or the right of redemption suspended at times (a) when the New York Stock
Exchange is closed for other than customary weekends and holidays, (b) when
trading on that Exchange is restricted, (c) when an emergency exists as a result
of which disposal by the Fund of securities owned by it is not reasonably
practicable or it is not reasonably practicable for the Fund fairly to determine
the value of its net assets, or (d) during any other period when the Securities
and Exchange Commission by order so permits; provided that applicable rules
    
 
                                       37
<PAGE>
   
and regulations of the Securities and Exchange Commission shall govern as to
whether the conditions prescribed in (b) or (c) exist. If the shares to be
redeemed have recently been purchased by check (including a certified or bank
cashier's check), payment of redemption proceeds may be delayed for the minimum
time needed to verify that the check used for investment has been honored (not
more than fifteen days from the time of receipt of the check by the Transfer
Agent). If the shares to be redeemed have recently been purchased by check
(including a certificate or bank cashier's check), payment of redemption
proceeds may be delayed for the minimum time needed to verify that the check
used for investment has been honored (not more than fifteen days from the time
of investment of the check by the Transfer Agent). Shareholders maintaining
margin accounts with DWR or another selected broker-dealer are referred to their
account executive regarding restrictions on redemption of shares of the Fund
pledged in the margin account.
    
 
   
    TRANSFERS OF SHARES.  In the event a shareholder requests a transfer of any
shares to a new registration, such shares will be transferred without sales
charge at the time of transfer. With regard to the status of shares which are
either subject to the CDSC or free of such charge (and with regard to the length
of time shares subject to the charge have been held), any transfer involving
less than all of the shares in an account will be made on a pro rata basis (that
is, by transferring shares in the same proportion that the transferred shares
bear to the total shares in the account immediately prior to the transfer). The
transferred shares will continue to be subject to any applicable CDSC as if they
had not been so transferred.
    
 
   
    REINSTATEMENT PRIVILEGE.  As discussed in the Prospectus, a shareholder who
has had his or her shares redeemed or repurchased and has not previously
exercised this reinstatement privilege may, within 35 days after the date of
redemption or repurchase, reinstate any portion or all of the proceeds of such
redemption or repurchase in shares of the Fund in the same Class at the net
asset value next determined after a reinstatement request is received by the
Transfer Agent.
    
 
    Exercise of the reinstatement privilege will not affect the federal income
tax treatment of any gain or loss realized upon the redemption or repurchase,
except that if the redemption or repurchase resulted in a loss and reinstatement
is made in shares of the Fund, some or all of the loss, depending on the amount
reinstated, will not be allowed as a deduction for federal income tax purposes
but will be applied to adjust the cost basis of the shares acquired upon
reinstatement.
 
DIVIDENDS, DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------
 
    As discussed in the Prospectus, the Fund will determine either to distribute
or to retain all or part of any net long-term capital gains in any year for
reinvestment. If any such gains are retained, the Fund will pay federal income
tax thereon, and shareholders will be able to claim their share of the tax paid
by the Fund as a credit against their individual federal income tax.
 
    Because the Fund intends to distribute all of its net investment income and
capital gains to shareholders and otherwise continue to qualify as a regulated
investment company under Subchapter M of the Internal Revenue Code, it is not
expected that the Fund will be required to pay any federal income tax.
Shareholders will normally have to pay federal income taxes, and any state
and/or income taxes, on the dividends and distributions they receive from the
Fund. Such dividends and distributions, to the extent that they are derived from
net investment income or short-term capital gains, are taxable to the
shareholder as ordinary income regardless of whether the shareholder receives
such payments in additional shares or in cash. Any dividends declared in the
last quarter of any calendar year which are paid in the following year prior to
February 1 will be deemed received by the shareholder in the prior calendar
year.
 
    Gains or losses on sales of securities by the Fund will be long-term capital
gains or losses if the securities have been held by the Fund for more than one
year. Gains or losses on the sale of securities held for one year or less will
be short-term gains or losses.
 
    The Fund has qualified and intends to remain qualified as a regulated
investment company under Subchapter M of the Internal Revenue Code of 1986. If
so qualified, the Fund will not be subject to federal income tax on its net
investment income and net short-term and long-term capital gains, if any,
realized during any fiscal year in which it distributes such income and capital
gains to its shareholders. Distributions of net
 
                                       38
<PAGE>
long-term capital gains, if any, are taxable to shareholders as long-term
capital gains regardless of how long a shareholder has held the Fund's shares
and regardless of whether the distribution is received in additional shares or
in cash. Capital gains distributions are not eligible for the dividends received
deduction.
 
    Dividends and interest received by the Fund with respect to foreign
securities in its portfolio may give rise to withholding and other taxes imposed
by foreign countries. Tax conventions between certain countries and the United
States may reduce or eliminate such taxes.
 
    Any dividend or capital gains distribution received by a shareholder from
any investment company will have the effect of reducing the net asset value of
the shareholder's stock in that company by the exact amount of the dividend or
capital gains distribution. Furthermore, capital gains distributions and some
portion of the dividends are subject to federal income taxes. If the net asset
value of the shares should be reduced below a shareholder's cost as a result of
the payment of dividends or the distribution of realized long-term capital
gains, such payment or distribution would be a return of capital but nonetheless
would be taxable to the shareholder. Therefore, an investor should consider the
tax implications of purchasing Fund shares immediately prior to a distribution
record date.
 
    Dividend payments will be eligible for the federal dividends received
deduction available to the Fund's corporate shareholders only to the extent the
aggregate dividends received by the Fund would be eligible for the deduction if
the Fund were the shareholder claiming the dividends received deduction. The
amount of dividends paid by the Fund which may qualify for the dividends
received deduction is limited to the aggregate amount of qualifying dividends
which the Fund derives from its portfolio investments which the Fund had held to
a minimum period, usually 46 days. Any distributions made by the Fund will not
be eligible for the dividends received deduction with respect to shares which
are held by the shareholder for 45 days or less. Any long-term capital gain
distributions will also not be eligible for the dividends received deduction.
The ability to take the dividends received deduction will also be limited in the
case of a Fund shareholder which incurs or continues indebtedness which is
directly attributable to its investment in the Fund.
 
    After the end of the year, shareholders will be sent full information on
their dividends and capital gains distributions for tax purposes, including
information as to the portion taxable as ordinary income, the portion taxable as
long-term capital gains and the portion eligible for the dividends received
deduction. To avoid being subject to a 31% federal backup withholding tax on
taxable dividends, capital gains distributions and the proceeds of redemptions
and repurchases, shareholders' taxpayer identification numbers must be furnished
and certified as to their accuracy.
 
    Shareholders are urged to consult their attorneys or tax advisers regarding
specific questions as to federal, state or local taxes.
 
PERFORMANCE INFORMATION
- --------------------------------------------------------------------------------
 
   
    As discussed in the Prospectus, from time to time the Fund may quote its
"total return" in advertisements and sales literature. These figures are
computed separately for Class A, Class B, Class C and Class D shares. The Fund's
"average annual total return" represents an annualization of the Fund's total
return over a particular period and is computed by finding the annual percentage
rate which will result in the ending redeemable value of a hypothetical $1,000
investment made at the beginning of a one, five or ten year period. The ending
redeemable value is reduced by any CDSC at the end of the one, five or ten year
or other period. For the purpose of this calculation, it is assumed that all
dividends and distributions are reinvested. The formula for computing the
average annual total return involves a percentage obtained by dividing the
ending redeemable value by the amount of the initial investment, taking a root
of the quotient (where the root is equivalent to the number of years in the
period) and subtracting 1 from the result. The average annual total returns of
the Fund for the year ended February 28, 1997, the five years ended February 28,
1997, and for the ten years ended February 28, 1997, were 15.88%, 13.29% and
10.56%, respectively. These returns are for Class B only; there were no other
Classes of shares outstanding on such date.
    
 
   
    In addition to the foregoing, the Fund may advertise its total return for
each Class over different periods of time by means of aggregate, average,
year-by-year or other types of total return figures. Such calculations
    
 
                                       39
<PAGE>
   
may or may not reflect the imposition of the maximum front-end sales charge for
Class A or the deduction of the CDSC for each of Class B and Class C which, if
reflected, would reduce the performance quoted. For example, the average total
return of the Fund may be calculated in the manner described in the preceding
paragraph, but without deduction of any applicable sales charge. Based on this
calculation, the average annual total returns of the Fund for the year ended
February 28, 1997, for the five years ended February 28, 1997, and for the ten
years ended February 28, 1997, were 20.88%, 13.53% and 10.56%, respectively.
This information is for Class B only; there were no other Classes of shares
outstanding on such date.
    
 
   
    In addition, the Fund may compute its aggregate total return for each Class
for specified periods by determining the aggregate percentage rate which will
result in the ending value of a hypothetical $1,000 investment made at the
beginning of the period. For the purpose of this calculation, it is assumed that
all dividends and distributions are reinvested. The formula for computing
aggregate total return involves a percentage obtained by dividing the ending
value (without the reduction for any sales charge) by the initial $1,000
investment and subtracting 1 from the result. Based on the foregoing
calculation, the Fund's total returns for the year ended February 28, 1997, the
five years ended February 28, 1997, and the ten years ended February 28, 1997,
were 20.88%, 88.58% and 172.77%, respectively. These returns are for Class B
only; there were no other Classes of shares outstanding on such date.
    
 
   
    The Fund may also advertise the growth of hypothetical investments of
$10,000, $50,000 and $100,000 in each Class of shares of the Fund by adding 1 to
the Fund's aggregate total return to date (expressed as a decimal and without
taking into account the effect of any applicable CDSC) and multiplying by
$9,475, $48,000 and $97,000 in the case of Class A (investments of $10,000,
$50,000 and $100,000 adjusted for the initial sales charge) or by $10,000,
$50,000 and $100,000 in the case of each of Class B, Class C and Class D, as the
case may be. Investments of $10,000, $50,000 and $100,000 in the Fund at
inception would have grown to $32,335, $161,675 and $323,350, respectively at
February 28, 1997. This information is for Class B only; there were no other
Classes of shares outstanding on such date.
    
 
    The Fund from time to time may also advertise its performance relative to
certain performance rankings and indexes compiled by independent organizations.
 
SHARES OF THE FUND
- --------------------------------------------------------------------------------
 
   
    The Fund is authorized to issue 2 billion shares of common stock of $0.01
par value (500 million shares for each Class). Shares of the Fund, when issued,
are fully paid, nonassessable, fully transferable and redeemable at the option
of the holder. Except for agreements entered into by the Fund in its ordinary
course of business within the limitations of the Fund's fundamental investment
policies (which may be modified only by shareholder vote), the Fund will not
issue any securities other than common stock.
    
 
    The shares of the Fund do not have cumulative voting rights, which means
that the holders of more than 50% of the shares voting for the election of the
directors can elect 100% of the directors if they choose to do so, and in such
event, the holders of the remaining shares voting for the election of directors
will not be able to elect any person or persons to the Board of Directors.
 
CUSTODIAN AND TRANSFER AGENT
- --------------------------------------------------------------------------------
 
    The Bank of New York, 90 Washington Street, New York, New York 10286 is the
Custodian of the Fund's assets. Any of the Fund's cash balances with the
Custodian in excess of $100,000 are unprotected by federal deposit insurance.
Such balances may, at times, be substantial.
 
    Dean Witter Trust Company, Harborside Financial Center, Plaza Two, Jersey
City, New Jersey 07311 is the Transfer Agent of the Fund's shares and Dividend
Disbursing Agent for payment of dividends and distributions on Fund shares and
Agent for shareholders under various investment plans described herein. Dean
Witter Trust Company is an affiliate of Dean Witter InterCapital Inc., the
Fund's Investment Manager, and of Dean Witter Distributors Inc., the Fund's
Distributor. As Transfer Agent and Dividend Disbursing Agent, Dean Witter Trust
Company's responsibilities include maintaining shareholder accounts, disbursing
cash dividends and
 
                                       40
<PAGE>
reinvesting dividends, processing account registration changes, handling
purchase and redemption transactions, mailing prospectuses and reports, mailing
and tabulating proxies, processing share certificate transactions, and
maintaining shareholder records and lists. For these services, Dean Witter Trust
Company receives a per shareholder account fee from the Fund.
 
INDEPENDENT ACCOUNTANTS
- --------------------------------------------------------------------------------
 
    Price Waterhouse LLP, 1177 Avenue of the Americas, New York, New York 10036
serves as the independent accountants of the Fund. The independent accountants
are responsible for auditing the annual financial statements of the Fund.
 
REPORTS TO SHAREHOLDERS
- --------------------------------------------------------------------------------
 
    The Fund will send to shareholders, at least semi-annually, reports showing
the Fund's portfolio and other information. An annual report, containing
financial statements audited by independent accountants, will be sent to
shareholders each year.
 
    The Fund's fiscal year ends on the last day of February. The financial
statements of the Fund must be audited at least once a year by independent
accountants whose selection is made annually by the Fund's Board of Directors.
 
LEGAL COUNSEL
- --------------------------------------------------------------------------------
 
    Barry Fink, Esq., who is an officer and the General Counsel of the
Investment Manager, is an officer and the General Counsel of the Fund.
 
EXPERTS
- --------------------------------------------------------------------------------
 
    The financial statements of the Fund for the fiscal year ended February 28,
1997, included in this Statement of Additional Information and incorporated by
reference in the Prospectus, have been so included and incorporated in reliance
on the report of Price Waterhouse LLP, independent accountants, given on the
authority of said firm as experts in auditing and accounting.
 
REGISTRATION STATEMENT
- --------------------------------------------------------------------------------
 
    This Statement of Additional Information and the Prospectus do not contain
all of the information set forth in the Registration Statement the Fund has
filed with the Securities and Exchange Commission. The complete Registration
Statement may be obtained from the Securities and Exchange Commission upon
payment of the fee prescribed by the rules and regulations of the Commission.
 
                                       41
<PAGE>
DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
REPORT OF INDEPENDENT ACCOUNTANTS
 
TO THE SHAREHOLDERS AND BOARD OF DIRECTORS
OF DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
 
In our opinion, the accompanying statement of assets and liabilities, including
the portfolio of investments, and the related statements of operations and of
changes in net assets and the financial highlights present fairly, in all
material respects, the financial position of Dean Witter Natural Resource
Development Securities Inc. (the "Fund") at February 28, 1997, the results of
its operations for the year then ended, the changes in its net assets for each
of the two years in the period then ended and the financial highlights for each
of the ten years in the period then ended, in conformity with generally accepted
accounting principles. These financial statements and financial highlights
(hereafter referred to as "financial statements") are the responsibility of the
Fund's management; our responsibility is to express an opinion on these
financial statements based on our audits. We conducted our audits of these
financial statements in accordance with generally accepted auditing standards
which require that we plan and perform the audit to obtain reasonable assurance
about whether the financial statements are free of material misstatement. An
audit includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements, assessing the accounting principles
used and significant estimates made by management, and evaluating the overall
financial statement presentation. We believe that our audits, which included
confirmation of securities at February 28, 1997 by correspondence with the
custodian and brokers and the application of alternative auditing procedures
where confirmations from brokers were not received, provide a reasonable basis
for the opinion expressed above.
 
PRICE WATERHOUSE LLP
1177 AVENUE OF THE AMERICAS
NEW YORK, NEW YORK 10036
APRIL 11, 1997
 
                      1997 FEDERAL TAX NOTICE (UNAUDITED)
 
       During the year ended February 28, 1997, the Fund paid to its
       shareholders $1.50 per share from long-term capital gains. For
       such period, 21.03% of the income paid qualified for the dividends
       received deduction available to corporations.
 
                                       42
<PAGE>
DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
PORTFOLIO OF INVESTMENTS FEBRUARY 28, 1997
<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                                VALUE
- ------------------------------------------------------------------
<C>          <S>                                   <C>
             COMMON STOCKS (91.5%)
             BASIC ENERGY (39.1%)
             NATURAL GAS (8.8%)
    30,000   Anardarko Petroleum Corp............  $     1,687,500
    35,000   Cabot Oil & Gas Corp................          555,625
    75,000   Chesapeake Energy Corp..............        1,556,250
    50,000   Devon Energy Corp...................        1,562,500
    55,000   El Paso Natural Gas Co..............        2,949,375
   120,000   Elan Energy, Inc. (Canada)*.........          964,771
    30,000   FX Energy, Inc.*....................          307,500
   175,000   Gulf Canada Resources, Ltd.
               (Canada)*.........................        1,225,000
   125,000   Numac Energy Inc. (Canada)*.........          571,006
    65,000   Petro-Canada (Canada)...............          940,652
    60,000   Questar Corp........................        2,175,000
    83,800   Rigel Energy Corp. (Canada)*........          796,229
    55,000   Sonat, Inc..........................        2,530,000
    40,000   Suncor, Inc. (Canada)...............        1,780,442
    50,000   Williams Companies, Inc.............        2,187,500
                                                   ---------------
                                                        21,789,350
                                                   ---------------
             NATURAL GAS - EXPLORATION & PRODUCTION (6.9%)
   175,000   Archer Resources Ltd. (Canada)*.....          722,665
    50,000   Barrett Resources Corp.*............        1,643,750
    35,000   Belden & Blake Corp.*...............          787,500
    65,000   Burlington Resources, Inc...........        2,851,875
    65,000   Chieftain International, Inc.*......        1,300,000
    40,000   Clayton Williams Energy, Inc.*......          510,000
   100,000   Comstock Resources, Inc.*...........          900,000
    21,200   Edge Petroleum Co.*.................          368,350
   110,000   Enserch Exploration, Inc.*..........        1,058,750
    40,000   Flores & Rucks, Inc.*...............        1,800,000
    40,000   KN Energy, Inc......................        1,580,000
   100,000   Ranger Oil Ltd. (Canada)............          900,000
    50,000   St. Mary Land & Exploration Co......        1,218,750
    70,000   Swift Energy Co.*...................        1,505,000
                                                   ---------------
                                                        17,146,640
                                                   ---------------
             OIL INTEGRATED - DOMESTIC (7.9%)
    35,000   Amerada Hess Corp...................        1,868,125
    32,000   Atlantic Richfield Co...............        4,000,000
    12,900   Louisiana Land & Exploration Co.....          615,975
    90,000   Occidental Petroleum Corp...........        2,295,000
    75,000   Oryx Energy Co.*....................        1,500,000
    50,000   Phillips Petroleum Co...............        2,068,750
    60,000   Unocal Corp.........................        2,317,500
   100,000   USX-Marathon Group..................        2,662,500
    40,000   Vintage Petroleum, Inc..............        1,205,000
    60,000   Wiser Oil Co........................        1,125,000
                                                   ---------------
                                                        19,657,850
                                                   ---------------
 
<CAPTION>
 NUMBER OF
  SHARES                                                VALUE
- ------------------------------------------------------------------
<C>          <S>                                   <C>
             OIL INTEGRATED - INTERNATIONAL (13.3%)
    30,000   British Petroleum Co. PLC (ADR)
               (United Kingdom)..................  $     3,971,250
    85,000   Ente Nazionale Idrocarburi SpA (ADR)
               (Italy)...........................        4,228,750
    70,000   Exxon Corp..........................        6,991,250
    38,000   Mobil Corp..........................        4,664,500
    30,000   Royal Dutch Petroleum Co. (ADR)
               (Netherlands).....................        5,190,000
    40,000   Texaco, Inc.........................        3,955,000
   100,000   Total S.A. (ADR) (France)...........        3,962,500
                                                   ---------------
                                                        32,963,250
                                                   ---------------
             OIL REFINERIES (2.2%)
    50,000   Ashland, Inc........................        2,093,750
    99,000   Tosco Corp..........................        2,759,625
    20,000   Ultramar Diamond Shamrock Corp......          610,000
                                                   ---------------
                                                         5,463,375
                                                   ---------------
 
             TOTAL BASIC ENERGY..................       97,020,465
                                                   ---------------
 
             ENERGY DEVELOPMENT & TECHNOLOGY (16.4%)
             OIL DRILLING (5.3%)
    20,000   Diamond Offshore Drilling, Inc.*....        1,180,000
    30,000   ENSCO International, Inc.*..........        1,301,250
    50,000   Falcon Drilling Company, Inc.*......        1,693,750
    50,000   Helmerich & Payne, Inc..............        2,112,500
    90,000   Marine Drilling Company, Inc.*......        1,338,750
    40,000   Noble Drilling Corp.*...............          710,000
    55,000   Patterson Energy, Inc.*.............        1,223,750
    50,000   Reading & Bates Corp.*..............        1,212,500
    50,000   Rowan Companies, Inc.*..............          993,750
    25,000   Transocean Offshore, Inc............        1,396,875
                                                   ---------------
                                                        13,163,125
                                                   ---------------
             OIL EQUIPMENT & SERVICES (10.6%)
    55,000   American Oilfield Divers, Inc.*.....          632,500
    35,000   Baker Hughes, Inc...................        1,242,500
    20,000   BJ Services Co.*....................          795,000
    50,000   Camco International, Inc............        1,931,250
    45,000   Cooper Cameron Corp.*...............        2,947,500
   125,000   Dawson Production Services, Inc.*...        1,437,500
    60,000   Dresser Industries, Inc.............        1,822,500
   120,000   Global Industries Ltd.*.............        2,160,000
    35,000   Halliburton Co......................        2,261,875
    75,000   Nabors Industries, Inc.*............        1,153,125
    20,000   Schlumberger, Ltd...................        2,012,500
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       43
<PAGE>
DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
PORTFOLIO OF INVESTMENTS FEBRUARY 28, 1997, CONTINUED
<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                                VALUE
- ------------------------------------------------------------------
<C>          <S>                                   <C>
    45,000   SEACOR Holdings, Inc.*..............  $     2,086,875
    40,500   Seitel Inc..........................        1,377,000
   150,000   Veritas DGC Inc.*...................        2,493,750
    60,000   Weatherford Enterra, Inc.*..........        1,800,000
                                                   ---------------
                                                        26,153,875
                                                   ---------------
             TRANSPORTATION (0.5%)
    44,000   Teekay Shipping Corp................        1,210,000
                                                   ---------------
             TOTAL ENERGY DEVELOPMENT &
             TECHNOLOGY..........................       40,527,000
                                                   ---------------
             METALS & BASIC MATERIALS (36.0%)
             ALUMINUM (2.0%)
    55,000   Alumax Inc.*........................        2,151,875
    40,000   Aluminum Co. of America.............        2,850,000
                                                   ---------------
                                                         5,001,875
                                                   ---------------
             BUILDING MATERIALS (1.2%)
    60,000   Caraustar Industries, Inc...........        1,770,000
    65,000   Shaw Group, Inc.*...................        1,300,000
                                                   ---------------
                                                         3,070,000
                                                   ---------------
             CHEMICALS (10.4%)
    50,000   Du Pont (E.I.) de Nemours & Co.,
               Inc...............................        5,362,500
    60,000   Eastman Chemical Co.................        3,307,500
    90,000   Georgia Gulf Corp...................        2,430,000
    50,000   Hercules, Inc.......................        2,325,000
    40,000   Imperial Chemical Industries PLC
               (ADR) (United Kingdom)............        1,995,000
   140,000   Monsanto Co.........................        5,092,500
    85,000   Olin Corp...........................        3,400,000
    20,000   Rohm & Haas Co......................        1,840,000
                                                   ---------------
                                                        25,752,500
                                                   ---------------
             CHEMICALS - DIVERSIFIED (0.5%)
    60,000   Engelhard Corp......................        1,327,500
                                                   ---------------
             CHEMICALS - SPECIALTY (4.5%)
   100,000   Asia Pacific Resources Ltd.
               (Canada)*.........................          606,636
    60,000   Cabot Corp..........................        1,410,000
    75,000   Cytec Industries, Inc.*.............        2,971,875
    70,000   IMC Global, Inc.....................        2,441,250
    60,000   Morton International, Inc...........        2,475,000
    75,000   Polymer Group, Inc.*................        1,134,375
                                                   ---------------
                                                        11,039,136
                                                   ---------------
             GOLD (4.6%)
    80,000   Agnico-Eagle Mines Ltd. (Canada)....        1,140,000
    85,000   Barrick Gold Corp. (Canada).........        2,401,250
 
<CAPTION>
 NUMBER OF
  SHARES                                                VALUE
- ------------------------------------------------------------------
<C>          <S>                                   <C>
   200,000   Dayton Mining Corp. (Canada)*.......  $     1,062,500
    50,000   Getchell Gold Corp.*................        2,575,000
    50,000   Golden Star Resources Ltd.*.........          718,750
    35,954   Newmont Mining Corp.................        1,707,815
   200,000   Triton Mining Corp. (Canada)*.......          584,710
   125,000   TVX Gold, Inc. (Canada)*............        1,109,375
                                                   ---------------
                                                        11,299,400
                                                   ---------------
             MACHINERY - DIVERSIFIED (1.6%)
    55,000   Deere & Co..........................        2,344,375
    85,000   Global Industrial Technologies,
               Inc.*.............................        1,508,750
                                                   ---------------
                                                         3,853,125
                                                   ---------------
             METALS - MISCELLANEOUS (2.5%)
    50,687   Freeport-McMoran Copper & Gold, Inc.
               (Series A)........................        1,653,663
   700,000   M.I.M. Holdings Ltd. (Australia)....          974,207
    30,000   RTZ Corp. PLC (ADR) (United
               Kingdom)..........................        1,848,750
    75,000   Stillwater Mining Co.*..............        1,715,625
                                                   ---------------
                                                         6,192,245
                                                   ---------------
             PAPER & FOREST PRODUCTS (6.1%)
    65,000   Buckeye Cellulose Corp..............        1,958,125
    45,000   Champion International Corp.........        1,985,625
    50,000   Fort Howard Corp.*..................        1,487,500
    85,000   Louisiana-Pacific Corp..............        1,806,250
    30,000   Mead Corp...........................        1,747,500
    45,000   Temple-Inland, Inc..................        2,480,625
    50,000   Union Camp Corp.....................        2,412,500
    20,000   Willamette Industries, Inc..........        1,280,000
                                                   ---------------
                                                        15,158,125
                                                   ---------------
             POLLUTION CONTROL (0.7%)
    50,000   U.S.A. Waste Services, Inc.*........        1,800,000
                                                   ---------------
             STEEL (1.9%)
   225,000   Algoma Steel, Inc. (Canada)*........        1,175,815
    50,000   Nucor Corp..........................        2,406,250
    60,000   Steel Dynamics, Inc.*...............        1,200,000
                                                   ---------------
                                                         4,782,065
                                                   ---------------
 
             TOTAL METALS & BASIC MATERIALS......       89,275,971
                                                   ---------------
 
             TOTAL COMMON STOCKS
             (IDENTIFIED COST $216,151,523)......      226,823,436
                                                   ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       44
<PAGE>
DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
PORTFOLIO OF INVESTMENTS FEBRUARY 28, 1997, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN
 THOUSANDS                                              VALUE
- ------------------------------------------------------------------
<C>          <S>                                   <C>
             SHORT-TERM INVESTMENTS (6.9%)
             U.S. GOVERNMENT AGENCIES (a) (4.0%)
  $  5,000   Federal Home Loan Banks 5.17% due
               03/06/97..........................  $     4,996,410
     5,000   Federal Home Loan Mortgage Corp.
               5.21% due 03/04/97................        4,997,829
                                                   ---------------
 
             TOTAL U.S. GOVERNMENT AGENCIES
             (AMORTIZED COST $9,994,239).........        9,994,239
                                                   ---------------
             REPURCHASE AGREEMENT (2.9%)
     7,312   The Bank of New York 5.25% due
               03/03/97 (dated 02/28/97; proceeds
               $7,315,538; collateralized by
               $863,272 U.S. Treasury Note 7.50%
               due 11/15/01 valued at $919,955
               and $6,417,958 U.S. Treasury Note
               5.625% due 10/31/97 valued at
               $6,538,631) (Identified Cost
               $7,312,339).......................        7,312,339
                                                   ---------------
</TABLE>
 
<TABLE>
<CAPTION>
                                                        VALUE
- ------------------------------------------------------------------
<C>          <S>                                   <C>
 
             TOTAL SHORT-TERM INVESTMENTS
             (IDENTIFIED COST $17,306,578).......  $    17,306,578
                                                   ---------------
 
TOTAL INVESTMENTS
(IDENTIFIED COST $233,458,101) (b).........   98.4%    244,130,014
 
OTHER ASSETS IN EXCESS OF LIABILITIES......    1.6       3,858,669
                                             ------   ------------
 
NET ASSETS.................................  100.0%   $247,988,683
                                             ------   ------------
                                             ------   ------------
 
<FN>
- ---------------------
ADR  American Depository Receipt.
 *   Non-income producing security.
(a)  Securities were purchased on a discount basis. The interest rates shown
     have been adjusted to reflect a money market equivalent yield.
(b)  The aggregate cost for federal income tax purposes approximates identified
     cost.
     The aggregate gross unrealized appreciation is $19,213,468 and the
     aggregate gross unrealized depreciation is $8,541,555, resulting in a net
     unrealized appreciation of $10,671,913.
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       45
<PAGE>
DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
FINANCIAL STATEMENTS
 
STATEMENT OF ASSETS AND LIABILITIES
FEBRUARY 28, 1997
 
<TABLE>
<S>                                                           <C>
ASSETS:
Investments in securities, at value
  (identified cost $233,458,101)............................  $244,130,014
Receivable for:
    Investments sold........................................    16,067,395
    Capital stock sold......................................       631,369
    Dividends...............................................       486,658
    Foreign withholding taxes reclaimed.....................        29,242
Prepaid expenses and other assets...........................        32,621
                                                              ------------
 
     TOTAL ASSETS...........................................   261,377,299
                                                              ------------
 
LIABILITIES:
Payable for:
    Investments purchased...................................    12,524,343
    Capital stock repurchased...............................       416,740
    Plan of distribution fee................................       191,427
    Investment management fee...............................       121,339
Accrued expenses............................................       134,767
                                                              ------------
 
     TOTAL LIABILITIES......................................    13,388,616
                                                              ------------
 
NET ASSETS:
Paid-in-capital.............................................   215,489,116
Net unrealized appreciation.................................    10,673,012
Accumulated undistributed net investment income.............        50,909
Accumulated undistributed net realized gain.................    21,775,646
                                                              ------------
 
     NET ASSETS.............................................  $247,988,683
                                                              ------------
                                                              ------------
 
NET ASSET VALUE PER SHARE,
  18,589,547 SHARES OUTSTANDING (500,000,000 SHARES
  AUTHORIZED OF $.01 PAR VALUE).............................
                                                                    $13.34
                                                              ------------
                                                              ------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       46
<PAGE>
DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
FINANCIAL STATEMENTS, CONTINUED
 
STATEMENT OF OPERATIONS
FOR THE YEAR ENDED FEBRUARY 28, 1997
 
<TABLE>
<S>                                                           <C>
NET INVESTMENT INCOME:
 
INCOME
Dividends (net of $66,360 foreign withholding tax)..........  $  2,993,820
Interest....................................................       702,288
                                                              ------------
 
     TOTAL INCOME...........................................     3,696,108
                                                              ------------
 
EXPENSES
Plan of distribution fee....................................     1,910,070
Investment management fee...................................     1,221,826
Transfer agent fees and expenses............................       222,190
Registration fees...........................................        74,599
Shareholder reports and notices.............................        55,672
Professional fees...........................................        55,473
Custodian fees..............................................        34,268
Directors' fees and expenses................................        16,999
Other.......................................................         2,099
                                                              ------------
 
     TOTAL EXPENSES.........................................     3,593,196
                                                              ------------
 
     NET INVESTMENT INCOME..................................       102,912
                                                              ------------
 
NET REALIZED AND UNREALIZED GAIN (LOSS):
Net realized gain...........................................    49,178,705
Net change in unrealized appreciation.......................   (15,813,380)
                                                              ------------
 
     NET GAIN...............................................    33,365,325
                                                              ------------
 
NET INCREASE................................................  $ 33,468,237
                                                              ------------
                                                              ------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       47
<PAGE>
DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
FINANCIAL STATEMENTS, CONTINUED
 
STATEMENT OF CHANGES IN NET ASSETS
 
<TABLE>
<CAPTION>
                                                                FOR THE YEAR        FOR THE YEAR
                                                                    ENDED               ENDED
                                                              FEBRUARY 28, 1997   FEBRUARY 29, 1996
- ---------------------------------------------------------------------------------------------------
<S>                                                           <C>                 <C>
 
INCREASE (DECREASE) IN NET ASSETS:
 
OPERATIONS:
Net investment income.......................................    $    102,912        $    743,674
Net realized gain...........................................      49,178,705           9,657,602
Net change in unrealized appreciation.......................     (15,813,380)         20,867,725
                                                              -----------------   -----------------
 
     NET INCREASE...........................................      33,468,237          31,269,001
                                                              -----------------   -----------------
 
DIVIDENDS AND DISTRIBUTIONS FROM:
Net investment income.......................................        (287,205)           (476,340)
Net realized gain...........................................     (30,377,434)         (7,165,637)
                                                              -----------------   -----------------
 
     TOTAL..................................................     (30,664,639)         (7,641,977)
                                                              -----------------   -----------------
 
Net increase (decrease) from capital stock transactions.....      92,523,643          (3,777,196)
                                                              -----------------   -----------------
 
     NET INCREASE...........................................      95,327,241          19,849,828
 
NET ASSETS:
Beginning of period.........................................     152,661,442         132,811,614
                                                              -----------------   -----------------
 
     END OF PERIOD
    (INCLUDING UNDISTRIBUTED NET INVESTMENT INCOME OF
    $50,909 AND $235,202, RESPECTIVELY).....................    $247,988,683        $152,661,442
                                                              -----------------   -----------------
                                                              -----------------   -----------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       48
<PAGE>
DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
NOTES TO FINANCIAL STATEMENTS FEBRUARY 28, 1997
 
1. ORGANIZATION AND ACCOUNTING POLICIES
 
Dean Witter Natural Resource Development Securities Inc. (the "Fund") is
registered under the Investment Company Act of 1940, as amended (the "Act"), as
a diversified, open-end management investment company. The Fund's investment
objective is capital growth. The Fund invests primarily in common stock of
companies in the natural resources and related areas. The Fund was incorporated
in Maryland on December 22, 1980 and commenced operations on March 30, 1981.
 
The preparation of financial statements in accordance with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts and disclosures. Actual results could differ from
those estimates.
 
The following is a summary of significant accounting policies:
 
A. VALUATION OF INVESTMENTS -- (1) an equity security listed or traded on the
New York, American or other domestic or foreign stock exchange is valued at its
latest sale price on that exchange prior to the time when assets are valued; if
there were no sales that day, the security is valued at the latest bid price (in
cases where securities are traded on more than one exchange, the securities are
valued on the exchange designated as the primary market pursuant to procedures
adopted by the Directors); (2) all other portfolio securities for which
over-the-counter market quotations are readily available are valued at the
latest available bid price prior to the time of valuation; (3) when market
quotations are not readily available, including circumstances under which it is
determined by Dean Witter InterCapital Inc. (the "Investment Manager") that sale
or bid prices are not reflective of a security's market value, portfolio
securities are valued at their fair value as determined in good faith under
procedures established by and under the general supervision of the Directors
(valuation of debt securities for which market quotations are not readily
available may be based upon current market prices of securities which are
comparable in coupon, rating and maturity or an appropriate matrix utilizing
similar factors); and (4) short-term debt securities having a maturity date of
more than sixty days at time of purchase are valued on a mark-to-market basis
until sixty days prior to maturity and thereafter at amortized cost based on
their value on the 61st day. Short-term debt securities having a maturity date
of sixty days or less at the time of purchase are valued at amortized cost.
 
B. ACCOUNTING FOR INVESTMENTS -- Security transactions are accounted for on the
trade date (date the order to buy or sell is executed). Realized gains and
losses on security transactions are determined by the identified cost method.
Dividend income and other distributions are recorded on the ex-dividend date.
Discounts are accreted over the life of the respective securities. Interest
income is accrued daily.
 
                                       49
<PAGE>
DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
NOTES TO FINANCIAL STATEMENTS FEBRUARY 28, 1997, CONTINUED
 
C. FEDERAL INCOME TAX STATUS -- It is the Fund's policy to comply with the
requirements of the Internal Revenue Code applicable to regulated investment
companies and to distribute all of its taxable income to its shareholders.
Accordingly, no federal income tax provision is required.
 
D. DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS -- The Fund records dividends and
distributions to its shareholders on the ex-dividend date. The amount of
dividends and distributions from net investment income and net realized capital
gains are determined in accordance with federal income tax regulations which may
differ from generally accepted accounting principles. These "book/tax"
differences are either considered temporary or permanent in nature. To the
extent these differences are permanent in nature, such amounts are reclassified
within the capital accounts based on their federal tax-basis treatment;
temporary differences do not require reclassification. Dividends and
distributions which exceed net investment income and net realized capital gains
for financial reporting purposes but not for tax purposes are reported as
dividends in excess of net investment income or distributions in excess of net
realized capital gains. To the extent they exceed net investment income and net
realized capital gains for tax purposes, they are reported as distributions of
paid-in-capital.
 
2. INVESTMENT MANAGEMENT AGREEMENT
 
Pursuant to an Investment Management Agreement with the Investment Manager, the
Fund pays a management fee, accrued daily and payable monthly, by applying the
following annual rates to the net assets of the Fund determined at the close of
each business day: 0.625% to the portion of daily net assets not exceeding $250
million and 0.50% to the portion of daily net assets exceeding $250 million.
 
Under the terms of the Agreement, in addition to managing the Fund's
investments, the Investment Manager maintains certain of the Fund's books and
records and furnishes, at its own expense, office space, facilities, equipment,
clerical, bookkeeping and certain legal services and pays the salaries of all
personnel, including officers of the Fund who are employees of the Investment
Manager. The Investment Manager also bears the cost of telephone services, heat,
light, power and other utilities provided to the Fund.
 
3. PLAN OF DISTRIBUTION
 
Shares of the Fund are distributed by Dean Witter Distributors Inc. (the
"Distributor"), an affiliate of the Investment Manager. The Fund has adopted a
Plan of Distribution (the "Plan") pursuant to Rule 12b-1 under the Act pursuant
to which the Fund pays the Distributor compensation, accrued
 
                                       50
<PAGE>
DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
NOTES TO FINANCIAL STATEMENTS FEBRUARY 28, 1997, CONTINUED
 
daily and payable monthly, at an annual rate of 1.0% of the lesser of: (a) the
average daily aggregate gross sales of the Fund's shares since the
implementation of the Plan on July 2, 1984 (not including reinvestment of
dividend or capital gain distributions) less the average daily aggregate net
asset value of the Fund's shares redeemed since the Fund's implementation of the
Plan upon which a contingent deferred sales charge has been imposed or upon
which such charge has been waived; or (b) the Fund's average daily net assets
attributable to shares issued, net of related shares redeemed, since
implementation of the Plan. Amounts paid under the Plan are paid to the
Distributor to compensate it for the services provided and the expenses borne by
it and others in the distribution of the Fund's shares, including the payment of
commissions for sales of the Fund's shares and incentive compensation to, and
expenses of, the account executives of Dean Witter Reynolds Inc. ("DWR"), an
affiliate of the Investment Manager and Distributor, and other employees or
selected broker-dealers who engage in or support distribution of the Fund's
shares or who service shareholder accounts, including overhead and telephone
expenses, printing and distribution of prospectuses and reports used in
connection with the offering of the Fund's shares to other than current
shareholders and preparation, printing and distribution of sales literature and
advertising materials. In addition, the Distributor may be compensated under the
Plan for its opportunity costs in advancing such amounts, which compensation
would be in the form of a carrying charge on any unreimbursed expenses incurred
by the Distributor.
 
Provided that the Plan continues in effect, any cumulative expenses incurred but
not yet recovered, may be recovered through future distribution fees from the
Fund and contingent deferred sales charges from the Fund's shareholders.
 
Although there is no legal obligation for the Fund to pay expenses incurred in
excess of payments made to the Distributor under the Plan and the proceeds of
contingent deferred sales charges paid by the investors upon redemption of
shares, if for any reason the Plan is terminated, the Directors will consider at
that time the manner in which to treat such expenses. The Distributor has
advised the Fund that such excess amounts, including carrying charges, totaled
$6,803,658 at February 28, 1997.
 
The Distributor has informed the Fund that for the year ended February 28, 1997,
it received approximately $151,000 in contingent deferred sales charges from
certain redemptions of the Fund's shares.
 
                                       51
<PAGE>
DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
NOTES TO FINANCIAL STATEMENTS FEBRUARY 28, 1997, CONTINUED
 
4. SECURITY TRANSACTIONS AND TRANSACTIONS WITH AFFILIATES
 
The cost of purchases and proceeds from sales of portfolio securities, excluding
short-term investments, for the year ended February 28, 1997 aggregated
$336,164,177 and $284,502,518, respectively.
 
For the year ended February 28, 1997, the Fund incurred brokerage commissions of
$263,065 with DWR for portfolio transactions executed on behalf of the Fund. At
February 28, 1997, the Fund's receivable for investments sold included unsettled
trades with DWR of $2,697,660.
 
Dean Witter Trust Company, an affiliate of the Investment Manager and
Distributor, is the Fund's transfer agent. At February 28, 1997, the Fund had
transfer agent fees and expenses payable of approximately $4,800.
 
The Fund has an unfunded noncontributory defined benefit pension plan covering
all independent Directors of the Fund who will have served as independent
Directors for at least five years at the time of retirement. Benefits under this
plan are based on years of service and compensation during the last five years
of service. At February 28, 1997, the Fund had an accrued pension liability of
$48,913 which is included in accrued expenses in the Statement of Assets and
Liabilities.
 
5. CAPITAL STOCK
 
Transactions in capital stock were as follows:
 
<TABLE>
<CAPTION>
                                                                           FOR THE YEAR                  FOR THE YEAR
                                                                              ENDED                         ENDED
                                                                        FEBRUARY 28, 1997             FEBRUARY 29, 1996
                                                                   ----------------------------   --------------------------
                                                                     SHARES          AMOUNT         SHARES         AMOUNT
                                                                   -----------   --------------   -----------   ------------
<S>                                                                <C>           <C>              <C>           <C>
Sold.............................................................   24,642,984   $  344,947,391    17,740,630   $213,549,836
Reinvestment of dividends and distributions......................    2,080,543       28,455,203       587,535      7,130,881
                                                                   -----------   --------------   -----------   ------------
                                                                    26,723,527      373,402,594    18,328,165    220,680,717
Repurchased......................................................  (20,151,281)    (280,878,951)  (18,637,754)  (224,457,913)
                                                                   -----------   --------------   -----------   ------------
Net increase (decrease)..........................................    6,572,246   $   92,523,643      (309,589)  $ (3,777,196)
                                                                   -----------   --------------   -----------   ------------
                                                                   -----------   --------------   -----------   ------------
</TABLE>
 
6. FEDERAL INCOME TAX STATUS
 
As of February 28, 1997, the Fund had temporary book/tax differences
attributable to capital loss deferrals on wash sales.
 
                                       52
<PAGE>
DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.
FINANCIAL HIGHLIGHTS
 
Selected ratios and per share data for a share of capital stock outstanding
throughout each period:
 
<TABLE>
<CAPTION>
                                                           FOR THE YEAR ENDED FEBRUARY 28
                   --------------------------------------------------------------------------------------------------------------
                     1997        1996*       1995        1994       1993      1992*       1991       1990       1989      1988*
    -------------------------------------------------------------------------------------------------------------------------
 
<S>                <C>         <C>         <C>         <C>        <C>        <C>        <C>        <C>        <C>        <C>
PER SHARE OPERATING
PERFORMANCE:
 
Net asset value,
 beginning of
 period..........  $   12.70   $   10.77   $   11.82   $  11.36   $  10.20   $  11.03   $  11.33   $   9.93   $   9.46   $   9.10
                   ---------   ---------   ---------   --------   --------   --------   --------   --------   --------   --------
 
Net investment
 income..........     --            0.06        0.09       0.09       0.16       0.20       0.25       0.30       0.23       0.20
Net realized and
 unrealized gain
 (loss)..........       2.66        2.53       (0.24)      1.25       1.18      (0.44)      0.02       1.80       0.72       0.44
                   ---------   ---------   ---------   --------   --------   --------   --------   --------   --------   --------
 
Total from
 investment
 operations......       2.66        2.59       (0.15)      1.34       1.34      (0.24)      0.27       2.10       0.95       0.64
                   ---------   ---------   ---------   --------   --------   --------   --------   --------   --------   --------
 
Less dividends
 and
 distributions
 from:
   Net investment
   income........      (0.02)      (0.04)      (0.12)     (0.09)     (0.18)     (0.20)     (0.28)     (0.32)     (0.21)     (0.28)
   Net realized
   gain..........      (2.00)      (0.62)      (0.78)     (0.79)     --         (0.39)     (0.29)     (0.38)     (0.27)     --
                   ---------   ---------   ---------   --------   --------   --------   --------   --------   --------   --------
 
Total dividends
 and
 distributions...      (2.02)      (0.66)      (0.90)     (0.88)     (0.18)     (0.59)     (0.57)     (0.70)     (0.48)     (0.28)
                   ---------   ---------   ---------   --------   --------   --------   --------   --------   --------   --------
 
Net asset value,
 end of period...  $   13.34   $   12.70   $   10.77   $  11.82   $  11.36   $  10.20   $  11.03   $  11.33   $   9.93   $   9.46
                   ---------   ---------   ---------   --------   --------   --------   --------   --------   --------   --------
                   ---------   ---------   ---------   --------   --------   --------   --------   --------   --------   --------
 
TOTAL INVESTMENT
RETURN+..........      20.88%      24.32%      (1.26)%    12.16%     13.31%     (1.91)%     2.87%     21.11%     10.29%      7.32%
 
RATIOS TO AVERAGE
NET ASSETS:
Expenses.........       1.84%       1.90%       1.90%      1.91%      1.96%      1.93%      1.80%      1.81%      1.92%      1.81%
 
Net investment
 income..........       0.05%       0.52%       0.77%      0.73%      1.46%      1.67%      2.28%      2.57%      2.09%      2.14%
 
SUPPLEMENTAL DATA:
Net assets, end
 of period, in
 thousands.......   $247,989    $152,661    $132,812   $139,459   $118,496   $113,145   $150,636   $154,741   $136,911   $171,725
 
Portfolio
 turnover rate...        156%         49%         59%        69%        52%        31%        29%        22%         7%        26%
 
Average
 commission rate
 paid............    $0.0534      --          --          --         --         --         --         --         --         --
<FN>
 
- ---------------------
 *   Year ended February 29.
 +   Does not reflect the deduction of sales charge. Calculated based on the net
     asset value as of the last business day of the period.
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
 
                                       53
<PAGE>
               DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.

                              PART C  OTHER INFORMATION

Item 24.  Financial Statements and Exhibits

(a)  FINANCIAL STATEMENTS 


(1) Financial statements and schedules, included
    in Prospectus (Part A):                                         Page in    
                                                                   Prospectus  
    Financial highlights for the years ended the                   ----------
    last day of February 1988, 1989, 1990,1991, 1992, 1993,
    1994, 1995, 1996 and 1997...............................           6

           
(2) Financial statements included in the Statement of
    Additional Information (Part B):                                Page in    
                                                                      SAI      
                                                                   ----------  
     Portfolio of Investments at February 28, 1997 ..........          43
          
     Statement of Assets and Liabilities at February 28,
    1997....................................................           46
         
    Statement of Operations for the year ended February 28,
    1997....................................................           47
          
    Statement of Changes in Net Assets for the years ended 
    February 29, 1996 and February 28, 1997.................           48

    Notes to Financial Statements ..........................           49
        
    Financial highlights for the years ended
    the last day of February 1988, 1989, 1990, 1991, 1992,
    1993, 1994, 1995, 1996 and 1997.........................           53
                 
    (3)  Financial statements included in Part C:

         None

 (b)   EXHIBITS:


 1. (a)   Form of Amendment to Articles of Incorporation.
 
    (b)   Form of Articles Supplementary.

    (c)   Form of Amendment to Articles of Incorporation.


                                      1

<PAGE>

 2.      By-Laws of the Registrant, Amended and Restated
         as of June 30, 1997. 

 5.      Form of Investment Management Agreement between the Registrant and
         Dean Witter InterCapital Inc.
 
 6. (a)  Form of Distribution Agreement between the Registrant and Dean Witter
         Distributors Inc.
 
    (b)  Form of Multiple-Class Distribution Agreement between the Registrant 
         and Dean Witter Distributors Inc.

11.      Consent of Independent Accountants.

15.      Form of Amended and Restated Plan of Distribution pursuant to 
         Rule 12b-1.

Other    Form of Multiple-Class Plan pursuant to Rule 18f-3. 

- -----------------------------                                
All other exhibits were previously filed and are incorporated by reference.

Item 25. PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH REGISTRANT.

         None

Item 26. NUMBER OF HOLDERS OF SECURITIES.
          (1)                                 (2)
                                     Number of Record Holders
     Title of Class                     at June 30, 1997    
    --------------                  ------------------------
Shares of Common Stock                       24,902
 

Item 27. INDEMNIFICATION

       Reference is made to Section 3.15 of the Registrant's By-Laws and Section
2-418 of the Maryland General Corporation Law. 
     
    Insofar as indemnification for liabilities arising under the Securities Act
of 1933 (the "Act") may be permitted to trustees, officers and controlling
persons of the Registrant pursuant to the foregoing provisions or otherwise, the
Registrant has been advised that in the opinion of the  Securities and Exchange
Commission such indemnification is against public policy as expressed in the Act
and is, therefore, unenforceable.  In the event that a claim for indemnification
against such liabilities (other than the payment by the Registrant of expenses
incurred or paid by a trustee, officer, or controlling person of the Registrant
in connection with the successful defense of any action, suit or proceeding) is
asserted against the Registrant by such trustee, officer or controlling person
in connection with the shares being registered, the Registrant will,


                                          2
<PAGE>

unless in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the Act, and
will be governed by the final adjudication of such issue.

    The Registrant hereby undertakes that it will apply the indemnification
provision of its by-laws in a manner consistent with Release 11330 of the
Securities and Exchange Commission under the Investment Company Act of 1940, so
long as the interpretation of Sections 17(h) and 17(i) of such Act remains in
effect.

    Registrant, in conjunction with the Investment Manager, Registrant's
Trustees, and other registered investment management companies managed by the
Investment Manager, maintains insurance on behalf of any person who is or was a
Trustee, officer, employee, or agent of Registrant, or who is or was serving at
the request of Registrant as a trustee, director, officer, employee or agent of
another trust or corporation, against any liability asserted against him and
incurred by him or arising out of his position.  However, in no event will
Registrant maintain insurance to indemnify any such person for any act for which
Registrant itself is not permitted to indemnify him.

Item 28. BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER.

See "The Fund and Its Management" in the Prospectus regarding the business of
the investment adviser.  The following information is given regarding officers
of Dean Witter InterCapital Inc.  InterCapital is a wholly-owned subsidiary of
Morgan Stanley, Dean Witter, Discover & Co.  The principal address of the Dean
Witter Funds is Two World Trade Center, New York, New York 10048.

The term "Dean Witter Funds" used below refers to the following registered
investment companies:

CLOSED-END INVESTMENT COMPANIES
- -------------------------------
 (1) InterCapital Income Securities Inc.
 (2) High Income Advantage Trust
 (3) High Income Advantage Trust II
 (4) High Income Advantage Trust III
 (5) Municipal Income Trust
 (6) Municipal Income Trust II
 (7) Municipal Income Trust III
 (8) Dean Witter Government Income Trust
 (9) Municipal Premium Income Trust
(10) Municipal Income Opportunities Trust
(11) Municipal Income Opportunities Trust II
(12) Municipal Income Opportunities Trust III
(13) Prime Income Trust
(14) InterCapital Insured Municipal Bond Trust
(15) InterCapital Quality Municipal Income Trust


                                          3
<PAGE>

(16) InterCapital Quality Municipal Investment Trust
(17) InterCapital Insured Municipal Income Trust
(18) InterCapital California Insured Municipal Income Trust
(19) InterCapital Insured Municipal Trust
(20) InterCapital Quality Municipal Securities
(21) InterCapital New York Quality Municipal Securities
(22) InterCapital California Quality Municipal Securities
(23) InterCapital Insured California Municipal Securities 
(24) InterCapital Insured Municipal Securities

OPEN-END INVESTMENT COMPANIES:
- ------------------------------
 (1) Dean Witter Short-Term Bond Fund
 (2) Dean Witter Tax-Exempt Securities Trust
 (3) Dean Witter Tax-Free Daily Income Trust
 (4) Dean Witter Dividend Growth Securities Inc.
 (5) Dean Witter Convertible Securities Trust
 (6) Dean Witter Liquid Asset Fund Inc.
 (7) Dean Witter Developing Growth Securities Trust
 (8) Dean Witter Retirement Series
 (9) Dean Witter Federal Securities Trust
(10) Dean Witter World Wide Investment Trust
(11) Dean Witter U.S. Government Securities Trust
(12) Dean Witter Select Municipal Reinvestment Fund
(13) Dean Witter High Yield Securities Inc.
(14) Dean Witter Intermediate Income Securities
(15) Dean Witter New York Tax-Free Income Fund
(16) Dean Witter California Tax-Free Income Fund
(17) Dean Witter Health Sciences Trust
(18) Dean Witter California Tax-Free Daily Income Trust
(19) Dean Witter Global Asset Allocation Fund
(20) Dean Witter American Value Fund
(21) Dean Witter Strategist Fund
(22) Dean Witter Utilities Fund
(23) Dean Witter World Wide Income Trust
(24) Dean Witter New York Municipal Money Market Trust
(25) Dean Witter Capital Growth Securities
(26) Dean Witter Precious Metals and Minerals Trust
(27) Dean Witter European Growth Fund Inc.
(28) Dean Witter Global Short-Term Income Fund Inc.
(29) Dean Witter Pacific Growth Fund Inc.
(30) Dean Witter Multi-State Municipal Series Trust
(31) Dean Witter Short-Term U.S. Treasury Trust
(32) Dean Witter Diversified Income Trust
(33) Dean Witter U.S. Government Money Market Trust
(34) Dean Witter Global Dividend Growth Securities
(35) Active Assets California Tax-Free Trust
(36) Dean Witter Natural Resource Development Securities Inc.
(37) Active Assets Government Securities Trust
(38) Active Assets Money Trust
(39) Active Assets Tax-Free Trust
(40) Dean Witter Limited Term Municipal Trust
(41) Dean Witter Variable Investment Series
(42) Dean Witter Value-Added Market Series
(43) Dean Witter Global Utilities Fund
(44) Dean Witter High Income Securities
(45) Dean Witter National Municipal Trust


                                          4
<PAGE>

(46) Dean Witter International SmallCap Fund
(47) Dean Witter Mid-Cap Growth Fund
(48) Dean Witter Select Dimensions Investment Series
(49) Dean Witter Balanced Growth Fund
(50) Dean Witter Balanced Income Fund
(51) Dean Witter Hawaii Municipal Trust
(52) Dean Witter Capital Appreciation Fund
(53) Dean Witter Intermediate Term U.S. Treasury Trust 
(54) Dean Witter Information Fund
(55) Dean Witter Japan Fund
(56) Dean Witter Income Builder Fund
(57) Dean Witter Special Value Fund
(58) Dean Witter Financial Services Trust
(59) Dean Witter Market Leader Trust

The term "TCW/DW Funds" refers to the following registered investment companies:

OPEN-END INVESTMENT COMPANIES
- -----------------------------
 (1) TCW/DW Core Equity Trust
 (2) TCW/DW North American Government Income Trust
 (3) TCW/DW Latin American Growth Fund
 (4) TCW/DW Income and Growth Fund 
 (5) TCW/DW Small Cap Growth Fund
 (6) TCW/DW Balanced Fund 
 (7) TCW/DW Total Return Trust
 (8) TCW/DW Mid-Cap Equity Trust
 (9) TCW/DW Global Telecom Trust
 (10)TCW/DW Strategic Income Trust

CLOSED-END INVESTMENT COMPANIES 
- -------------------------------
 (1) TCW/DW Term Trust 2000
 (2) TCW/DW Term Trust 2002 
 (3) TCW/DW Term Trust 2003
 (4) TCW/DW Emerging Markets Opportunities Trust

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION                        
- -----------------            ------------------------------------------------

Charles A. Fiumefreddo       Executive Vice President and Director of Dean
Chairman, Chief              Witter Reynolds Inc. ("DWR"); Chairman, Chief
Executive Officer and        Executive Officer and Director of Dean Witter
Director                     Distributors Inc. ("Distributors") and Dean
                             Witter Services Company Inc. ("DWSC"); Chairman 
                             and Director of Dean Witter Trust Company    
                             ("DWTC"); Chairman, Director or Trustee, President
                             and Chief Executive Officer of the Dean Witter 
                             Funds and Chairman, Chief Executive Officer and
                             Trustee of the TCW/DW Funds; Director and/or
                             officer of various Morgan Stanley, Dean Witter,
                             Discover & Co. ("MSDWD") subsidiaries; Formerly
                             Executive Vice President and Director of Dean  
                             Witter, Discover & Co.


                                          5
<PAGE>

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION                        
- -----------------            ------------------------------------------------

Philip J. Purcell            Chairman, Chief Executive Officer and Director of
Director                     of MSDWD and DWR; Director of DWSC and
                             Distributors; Director or Trustee of the Dean
                             Witter Funds; Director and/or officer of various
                             MSDWD subsidiaries.

Richard M. DeMartini         President and Chief Operating Officer
Director                     of Dean Witter Capital,  a division of DWR;
                             Director of DWR, DWSC, Distributors
                             and DWTC; Trustee of the TCW/DW Funds.

James F. Higgins             President and Chief Operating Officer of
Director                     Dean Witter Financial; Director of DWR,
                             DWSC, Distributors and DWTC.

Thomas C. Schneider          Executive Vice President and Chief Strategic 
Executive Vice               and Administrative Officer of MSDWD; Executive
President, Chief             Vice President and Chief Financial Officer of 
Financial Officer and        DWSC and Distributors; Director of DWR,
Director                     DWSC and Distributors.

Christine A. Edwards         Executive Vice President, Chief Legal Officer
Director                     and Secretary of MSDWD; Executive Vice
                             President, Secretary and Chief Legal Officer
                             of Distributors; Director of DWR, DWSC and
                             Distributors.

Robert M. Scanlan            President and Chief Operating Officer of DWSC, 
President and Chief          Executive Vice President of Distributors;
Operating Officer            Executive Vice President and Director of DWTC;
                             Vice President of the Dean Witter Funds and the
                             TCW/DW Funds.

Mitchell M. Merin            President and Chief Strategic Officer of DWSC,
President and Chief          Executive Vice President of Distributors; 
Strategic Officer            Executive Vice President and Director of DWTC;
                             Executive Vice President and Director of DWR;
                             Director of SPS Transaction Services, Inc. and
                             various other MSDWD subsidiaries.

John B. Van Heuvelen         President, Chief Operating Officer and Director
Executive Vice               of DWTC.
President

Joseph J. McAlinden
Executive Vice President
and Chief Investment         Vice President of the Dean Witter Funds and
Officer                      Director of DWTC.


                                          6
<PAGE>

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION                        
- -----------------            ------------------------------------------------

Barry Fink                   Assistant Secretary of DWR; Senior Vice President,
Senior Vice President,       Secretary and General Counsel of DWSC; Senior Vice
Secretary and General        President, Assistant Secretary and Assistant 
Counsel                      General Counsel of Distributors; Vice President,
                             Secretary and General Counsel of the Dean Witter 
                             Funds and the TCW/DW Funds.
Peter M. Avelar
Senior Vice President        Vice President of various Dean Witter Funds.

Mark Bavoso
Senior Vice President        Vice President of various Dean Witter Funds.

Richard Felegy
Senior Vice President                                               

Edward F. Gaylor
Senior Vice President        Vice President of various Dean Witter Funds.

Robert S. Giambrone          Senior Vice President of DWSC, Distributors     
Senior Vice President        and DWTC and Director of DWTC; Vice President
                             of the Dean Witter Funds and the TCW/DW Funds. 

Rajesh K. Gupta
Senior Vice President        Vice President of various Dean Witter Funds.

Kenton J. Hinchcliffe
Senior Vice President        Vice President of various Dean Witter Funds.

Kevin Hurley
Senior Vice President        Vice President of various Dean Witter Funds.

Jenny Beth Jones             Vice President of Dean Witter Special Value Fund.
Senior Vice President

John B. Kemp, III            Director of the Provident Savings Bank, Jersey
Senior Vice President        City, New Jersey.

Anita H. Kolleeny
Senior Vice President        Vice President of various Dean Witter Funds.

Jonathan R. Page
Senior Vice President        Vice President of various Dean Witter Funds.

Ira N. Ross
Senior Vice President        Vice President of various Dean Witter Funds.

Guy G. Rutherfurd, Jr.       Vice President of Dean Witter Market Leader
Senior Vice President        Trust.



                                          7
<PAGE>

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION                        
- -----------------            ------------------------------------------------

Rafael Scolari               Vice President of Prime Income Trust.
Senior Vice President

Rochelle G. Siegel
Senior Vice President        Vice President of various Dean Witter Funds.

Jayne M. Stevlingston        Vice President of various Dean Witter Funds.
Senior Vice President

Paul D. Vance
Senior Vice President        Vice President of various Dean Witter Funds.

Elizabeth A. Vetell
Senior Vice President

James F. Willison
Senior Vice President        Vice President of various Dean Witter Funds.

Ronald J. Worobel
Senior Vice President        Vice President of various Dean Witter Funds.

Douglas Brown
First Vice President

Thomas F. Caloia             First Vice President and Assistant Treasurer of
First Vice President         DWSC, Assistant Treasurer of Distributors;
and Assistant                Treasurer and Chief Financial Officer of the
                             Treasurer Dean Witter Funds and the TCW/DW Funds.

Thomas Chronert
First Vice President

Rosalie Clough
First Vice President

Marilyn K. Cranney           Assistant Secretary of DWR; First Vice President
First Vice President         and Assistant Secretary of DWSC; Assistant
and Assistant Secretary      Secretary of the Dean Witter Funds and the TCW/DW 
                             Funds.

Michael Interrante           First Vice President and Controller of DWSC; 
First Vice President         Assistant Treasurer of Distributors;First Vice
and Controller               President and Treasurer of DWTC. 

David Johnson
First Vice President

Stanley Kapica
First Vice President


                                          8
<PAGE>

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION                        
- -----------------            ------------------------------------------------

Robert Zimmerman
First Vice President

Dale Albright
Vice President

Joan G. Allman
Vice President

Andrew Arbenz
Vice President

Joseph Arcieri
Vice President               Vice President of various Dean Witter Funds.

Kirk Balzer
Vice President               Vice President of Various Dean Witter Funds.

Nancy Belza
Vice President

Dale Boettcher
Vice President

Joseph Cardwell
Vice President

Philip Casparius
Vice President

B. Catherine Connelly
Vice President

Salvatore DeSteno
Vice President               Vice President of DWSC.

Frank J. DeVito
Vice President               Vice President of DWSC.

Bruce Dunn
Vice President

Jeffrey D. Geffen
Vice President

Deborah Genovese
Vice President


                                          9
<PAGE>

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION                        
- -----------------            ------------------------------------------------

Michael Geringer
Vice President

Stephen Greenhut
Vice President

Peter W. Gurman
Vice President

Matthew Haynes               Vice President of Dean Witter
Vice President               Variable Investment Series

Peter Hermann  
Vice President               Vice President of various Dean Witter Funds

Elizabeth Hinchman
Vice President

David Hoffman
Vice President

Christopher Jones
Vice President

James P. Kastberg
Vice President

Michelle Kaufman
Vice President               Vice President of various Dean Witter Funds

Michael Knox   
Vice President               Vice President of various Dean Witter Funds 

Paula LaCosta
Vice President               Vice President of various Dean Witter Funds.

Thomas Lawlor
Vice President

Gerard J. Lian 
Vice President               Vice President of various Dean Witter Funds.

Catherine Maniscalco         Vice President of Dean Witter Natural 
Vice President               Resource Development Securities Inc.

Albert McGarity
Vice President


                                          10
<PAGE>

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION                        
- -----------------            ------------------------------------------------

LouAnne D. McInnis           Vice President and Assistant Secretary of DWSC;
Vice President and           Assistant Secretary of the Dean Witter Funds and
Assistant Secretary          the TCW/DW Funds.

Sharon K. Milligan
Vice President

Julie Morrone
Vice President

Mary Beth Mueller
Vice President

David Myers                  Vice President of Dean Witter Natural 
Vice President               Resource Development Securities Inc.

James Nash
Vice President

Richard Norris
Vice President

Carsten Otto                 Vice President and Assistant Secretary of DWSC;
Vice President and           Assistant Secretary of the Dean Witter Funds and 
Assistant Secretary          the TCW/DW Funds.

George Paoletti
Vice President

Anne Pickrell                Vice President of Dean Witter Global Short-
Vice President               Term Income Fund Inc.

Michael Roan
Vice President

Hugh Rose
Vice President

Robert Rossetti              Vice President of Dean Witter Precious Metal and
Vice President               Minerals Trust.

Ruth Rossi                   Vice President and Assistant Secretary of DWSC;
Vice President and           Assistant Secretary of the Dean Witter Funds and
Assistant Secretary          the TCW/DW Funds.

Carl F. Sadler
Vice President


                                          11
<PAGE>

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION                        
- -----------------            ------------------------------------------------

Peter Seeley                 Vice President of Dean Witter World
Vice President               Wide Income Trust

Naomi Stein
Vice President

Kathleen H. Stromberg
Vice President               Vice President of various Dean Witter Funds.

Marybeth Swisher
Vice President

Vinh Q. Tran
Vice President               Vice President of various Dean Witter Funds.

Robert Vanden Assem
Vice President

Alice Weiss
Vice President               Vice President of various Dean Witter Funds.

Katherine Wickham
Vice President

Item 29.    PRINCIPAL UNDERWRITERS

     (a) Dean Witter Distributors Inc. ("Distributors"), a Delaware             
         corporation, is the principal underwriter of the Registrant.           
         Distributors is also the principal underwriter of the following        
         investment companies:

 (1)          Dean Witter Liquid Asset Fund Inc.
 (2)          Dean Witter Tax-Free Daily Income Trust
 (3)          Dean Witter California Tax-Free Daily Income Trust
 (4)          Dean Witter Retirement Series
 (5)          Dean Witter Dividend Growth Securities Inc.
 (6)          Dean Witter Global Asset Allocation
 (7)          Dean Witter World Wide Investment Trust
 (8)          Dean Witter Capital Growth Securities 
 (9)          Dean Witter Convertible Securities Trust
(10)          Active Assets Tax-Free Trust
(11)          Active Assets Money Trust
(12)          Active Assets California Tax-Free Trust
(13)          Active Assets Government Securities Trust
(14)          Dean Witter Short-Term Bond Fund
(15)          Dean Witter Mid-Cap Growth Fund
(16)          Dean Witter U.S. Government Securities Trust
(17)          Dean Witter High Yield Securities Inc.
(18)          Dean Witter New York Tax-Free Income Fund
(19)          Dean Witter Tax-Exempt Securities Trust


                                          12
<PAGE>

(20)          Dean Witter California Tax-Free Income Fund
(21)          Dean Witter Limited Term Municipal Trust
(22)          Dean Witter Natural Resource Development Securities Inc.
(23)          Dean Witter World Wide Income Trust
(24)          Dean Witter Utilities Fund
(25)          Dean Witter Strategist Fund
(26)          Dean Witter New York Municipal Money Market Trust
(27)          Dean Witter Intermediate Income Securities
(28)          Prime Income Trust
(29)          Dean Witter European Growth Fund Inc.
(30)          Dean Witter Developing Growth Securities Trust
(31)          Dean Witter Precious Metals and Minerals Trust
(32)          Dean Witter Pacific Growth Fund Inc.
(33)          Dean Witter Multi-State Municipal Series Trust
(34)          Dean Witter Federal Securities Trust
(35)          Dean Witter Short-Term U.S. Treasury Trust
(36)          Dean Witter Diversified Income Trust
(37)          Dean Witter Health Sciences Trust
(38)          Dean Witter Global Dividend Growth Securities
(39)          Dean Witter American Value Fund
(40)          Dean Witter U.S. Government Money Market Trust
(41)          Dean Witter Global Short-Term Income Fund Inc.
(42)          Dean Witter Value-Added Market Series
(43)          Dean Witter Global Utilities Fund
(44)          Dean Witter High Income Securities
(45)          Dean Witter National Municipal Trust    
(46)          Dean Witter International SmallCap Fund
(47)          Dean Witter Balanced Growth Fund
(48)          Dean Witter Balanced Income Fund
(49)          Dean Witter Hawaii Municipal Trust
(50)          Dean Witter Variable Investment Series   
(51)          Dean Witter Capital Appreciation Fund
(52)          Dean Witter Intermediate Term U.S. Treasury Trust
(53)          Dean Witter Information Fund
(54)          Dean Witter Japan Fund
(55)          Dean Witter Income Builder Fund
(56)          Dean Witter Special Value Fund
(57)          Dean Witter Financial Services Trust
(58)          Dean Witter Market Leader Trust
 (1)          TCW/DW Core Equity Trust
 (2)          TCW/DW North American Government Income Trust
 (3)          TCW/DW Latin American Growth Fund
 (4)          TCW/DW Income and Growth Fund
 (5)          TCW/DW Small Cap Growth Fund
 (6)          TCW/DW Balanced Fund
 (7)          TCW/DW Total Return Trust
 (8)          TCW/DW Mid-Cap Equity Trust
 (9)          TCW/DW Global Telecom Trust 
 (10)         TCW/DW Strategic Income Trust

    (b)  The following information is given regarding directors and officers of
    Distributors not listed in Item 28 above.  The principal address of
    Distributors is Two World Trade Center, New York, New York 10048.  None of
    the following persons has any position or office with the Registrant.


                                          13
<PAGE>

                                       Positions and
                                       Office with
    Name                               Distributors 
    ----                               -------------  
    Fredrick K. Kubler                 Senior Vice President, Assistant
                                       Secretary and Chief Compliance
                                       Officer.

    Michael T. Gregg                   Vice President and Assistant
                                       Secretary.


Item 30.    LOCATION OF ACCOUNTS AND RECORDS

       All accounts, books and other documents required to be maintained by
Section 31(a) of the Investment Company Act of 1940 and the Rules thereunder are
maintained by the Investment Manager at its offices, except records relating to
holders of shares issued by the Registrant, which are maintained by the
Registrant's Transfer Agent, at its place of business as shown in the
prospectus.


Item 31.    MANAGEMENT SERVICES

        Registrant is not a party to any such management-related service
contract.

Item 32.    UNDERTAKINGS

        Registrant hereby undertakes to furnish each person to whom a prospectus
is delivered with a copy of the Registrant's latest annual report to
shareholders, upon request and without charge.


                                          14
<PAGE>

                                      SIGNATURES
                                      ----------
                                           
    Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant certifies that it meets all of
the requirements for effectiveness of this Registration Statement pursuant to
Rule 485(b) under the Securities Act of 1933 and has duly caused this
Post-Effective Amendment to the Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of New York
and State of New York on the 18th day of July, 1997.

                 DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.    
                   
                                       By    /s/ Barry Fink             
                                          -----------------------------------
                                                 Barry Fink
                                          Vice President and Secretary

    Pursuant to the requirements of the Securities Act of 1933, this
Post-Effective Amendment No. 21 has been signed below by the following persons
in the capacities and on the dates indicated.

    Signatures                         Title                          Date
    ----------                         -----                          ----

(1) Principal Executive Officer         President, Chief 
                                        Executive Officer,
                                        Director and Chairman
By  /c/ Charles A. Fiumefreddo                                       07/18/97
    -------------------------------
        Charles A. Fiumefreddo

(2) Principal Financial Officer         Treasurer and Principal
                                        Accounting Officer
                   
By  /c/ Thomas F. Caloia                                             07/18/97
    -------------------------------
        Thomas F. Caloia

(3) Majority of the Directors  

    Charles A. Fiumefreddo (Chairman)
    Philip J. Purcell

By  /c/ Barry Fink                                                   07/18/97
    -------------------------------
        Barry Fink   
        Attorney-in-Fact

    Michael Bozic       Manuel H. Johnson      
    Edwin J. Garn       Michael E. Nugent      
    John R. Haire       John L. Schroeder      
    
By  /s/ David A. Butowsky                                            07/18/97
    -------------------------------
        David A. Butowsky     
        Attorney-in-Fact 



<PAGE>

                                    EXHIBIT INDEX
                                    -------------


 1. (a)  Form of Amendment to Articles of Incorporation.
 
    (b)  Form of Articles Supplementary.

    (c)  Form of Amendment to Articles of Incorporation.

 2.      By-Laws of the Registrant, Amended and Restated as of June 30, 1997. 

 5.      Form of Investment Management Agreement between the Registrant and
         Dean Witter InterCapital Inc.
 
 6. (a)  Form of Distribution Agreement between the Registrant and Dean Witter
         Distributors Inc.
 
    (b)  Form of Multiple-Class Distribution Agreement between the Registrant
         and Dean Witter Distributors Inc.

11.      Consent of Independent Accountants.

15.      Form of Amended and Restated Plan of Distribution pursuant to Rule
         12b-1.

Other    Form of Multiple-Class Plan pursuant to Rule 18f-3. 
    




<PAGE>

           DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC. 
                            ARTICLES OF AMENDMENT 

   Dean Witter Natural Resource Development Securities Inc., a Maryland 
Corporation (the "Corporation") having its principal office in Baltimore, 
Maryland, hereby certifies to the State Department of Assessments and 
Taxation of Maryland that: 

   FIRST: The Articles of Incorporation of the Corporation (the "Articles") 
are hereby amended as follows: 

     Article V, Section (2) is renumbered as Section (3) and a new Section (2) 
    is hereby inserted to read as follows: 

        (2) The Corporation is authorized to issue its shares in two or more 
       series or two or more classes, and subject to the requirements of the 
       Investment Company Act of 1940, as amended, particularly Section 18(f) 
       thereof and Rule 18f-2 thereunder, the different series or classes 
       shall be established and designated, and the variations in the 
       relative preferences, conversion and other rights, voting powers, 
       restrictions, limitations as to dividends, qualifications and terms 
       and conditions of redemption as between the different series or 
       classes shall be fixed and determined by the Board of Directors; 
       provided that the Board of Directors shall not classify or reclassify 
       any of such shares into any class or series of stock which is prior to 
       any class or series of stock then outstanding with respect to rights 
       upon the liquidation, dissolution or winding up of the affairs of, or 
       upon any distribution of the general assets of, the Corporation, 
       except that there may be variations so fixed and determined between 
       different series or classes as to investment objective, purchase 
       price, right of redemption, special rights as to dividends and on 
       liquidation with respect to assets belonging to a particular series or 
       class, voting powers and conversion rights. All references to Common 
       Stock in these Articles shall be deemed to be shares of any or all 
       series and classes as the context may require. 

        The following is a description of the preferences, conversion and 
       other rights, voting powers, restrictions, limitations as to 
       dividends, qualifications and terms and conditions of redemption of 
       any additional class or series of Common Stock of the Corporation 
       (unless provided otherwise by the Board of Directors with respect to 
       any such additional class or series at the time of establishing and 
       designating such additional class or series): 

        (a) The number of authorized Common Stock and the number of Common 
       Stock of each series or of each class that may be issued shall be in 
       such number as may be determined by the Board of Directors and 
       reflected in Articles Supplementary filed with the Maryland State 
       Department of Assessments and Taxation. The Directors may classify or 
       reclassify any unissued Common Stock or any Common Stock previously 
       issued and reacquired of any series or class into one or more series 
       or one or more classes that may be established and designated from 
       time to time. The Directors may reissue for such consideration and on 
       such terms as they may determine, or cancel, any Common Stock of any 
       series or any class reacquired by the Corporation at their discretion 
       from time to time. 

        (b) All consideration received by the Corporation for the issue or 
       sale of Common Stock of a particular series or class, together with 
       all assets in which such consideration is invested or reinvested, all 
       income, earnings, profits and proceeds thereof, including any proceeds 
       derived from the sale, exchange or liquidation of such assets, and any 
       funds or payments derived from any reinvestment of such proceeds in 
       whatever form the same may be, shall irrevocably belong to that series 
       or class for all purposes, subject only to the rights of creditors, 
       and shall be so recorded upon the books of account of the Corporation. 
       In the event that there are any assets, income, earnings, profits and 
       proceeds thereof funds, or payments which are not readily identifiable 
       as belonging to any particular series or class, the Directors shall 
       allocate them among any one or more of the series or classes 
       established and designated from time to time in such manner and on 
       such basis as they, in their sole discretion, deem fair and equitable. 
       Each such allocation by the Corporation shall be conclusive and 
       binding upon the stockholders of all series 

                                       1           
<PAGE>

       or classes for all purposes. The Directors shall have full discretion, 
       to the extent not inconsistent with the Investment Company Act of 
       1940, as amended, and the Maryland General Corporation Law, to 
       determine which items shall be treated as income and which items shall 
       be treated as capital; and each such determination and allocation 
       shall be conclusive and binding upon the stockholders. 

        (c) The assets belonging to each particular series or class shall be 
       charged with the liabilities of the Corporation in respect of that 
       series or class and all expenses, costs, charges and reserves 
       attributable to that series, and any general liabilities, expenses, 
       costs, charges or reserves of the Corporation which are not readily 
       identifiable as belonging to any particular series or class shall be 
       allocated and charged by the Directors to and among any one or more of 
       the series or classes established and designated from time to time in 
       such manner and on such basis as the Directors in their sole 
       discretion deem fair and equitable. Each allocation of liabilities, 
       expenses, costs, charges and reserves by the Directors shall be 
       conclusive and binding upon the stockholders of all series or classes 
       for all purposes. 

        (d) Dividends and distributions on Common Stock of a particular 
       series or class may be paid with such frequency as the Directors may 
       determine, which may be daily or otherwise, pursuant to a standing 
       resolution or resolutions adopted only once or with such frequency as 
       the Board of Directors may determine, to the holders of Common Stock 
       of that series or class, from such of the income and capital gains, 
       accrued or realized, from the assets belonging to that series or 
       class, as the Directors may determine, after providing for actual and 
       accrued liabilities belonging to that series or class. All dividends 
       and distributions on Common Stock of a particular series or class 
       shall be distributed pro rata to the holders of that series or class 
       in proportion to the number of Common Stock of that series or class 
       held by such holders at the date and time of record established for 
       the payment of such dividends or distributions except that in 
       connection with any dividend or distribution program or procedure, the 
       Board of Directors may determine that no dividend or distribution 
       shall be payable on shares as to which the stockholder's purchase 
       order and/or payment in proper form have not been received by the time 
       or times established by the Board of Directors under such program or 
       procedure. 

        The Corporation intends to have each separate series qualify as a 
       "regulated investment company" under the Internal Revenue Code of 
       1986, or any successor comparable statute thereto, and regulations 
       promulgated thereunder. Inasmuch as the computation of net income and 
       gains for Federal income tax purposes may vary from the computation 
       thereof on the books of the Corporation, the Board of Directors shall 
       have the power, in its sole discretion, to distribute in any fiscal 
       year as dividends, including dividends designated in whole or in part 
       as capital gains distributions, amounts sufficient, in the opinion of 
       the Board of Directors, to enable the respective series to qualify as 
       regulated investment companies and to avoid liability of such series 
       for Federal income tax in respect of that year. However, nothing in 
       the foregoing shall limit the authority of the Board of Directors to 
       make distributions greater than or less than the amount necessary to 
       qualify the series as regulated investment companies and to avoid 
       liability of such series for such tax. 

        Dividends and distributions may be made in cash, property or 
       additional shares of the same or another class or series, or a 
       combination thereof, as determined by the Board of Directors or 
       pursuant to any program that the Board of Directors may have in effect 
       at the time for the election by each stockholder of the mode of the 
       making of such dividend or distribution to that stockholder. Any such 
       dividend or distribution paid in shares will be paid at the net asset 
       value thereof as defined in section (3) below. 

        (e) In the event of the liquidation or dissolution of the Corporation 
       or of a particular class or series, the stockholders of each class or 
       series that has been established and designated and is being 
       liquidated shall be entitled to receive, as a class or series, when 
       and as declared by the Board of Directors, the excess of the assets 
       belonging to the class or series over the liabilities belonging to 
       that class or series. The holders of shares of any particular class or 
       series shall not 

                                       2           
<PAGE>

       be entitled thereby to any distribution upon liquidation of any other 
       class or series. The assets so distributable to the stockholders of 
       any particular class or series shall be distributed among such 
       stockholders in proportion to the number of shares of that class or 
       series held by them and recorded on the books of the Corporation. The 
       liquidation of any particular class or series in which there are 
       shares then outstanding may be authorized by vote of a majority of the 
       outstanding securities of that class or series, as defined in the 
       Investment Company Act of 1940, as amended, and without the vote of 
       the holders of any other class or series. The liquidation or 
       dissolution of a particular class or series may be accomplished, in 
       whole or in part, by the transfer of assets of such class or series to 
       another class of series or by the exchange of shares of such class or 
       series for the shares of another class or series. 

        (f) On each matter submitted to a vote of the stockholders, each 
       holder of a share shall be entitled to one vote for each share 
       standing in his name on the books of the Corporation, irrespective of 
       the class or series thereof, and all shares of all classes or series 
       shall vote as a single class or series ("Single Class voting"); 
       provided, however, that (i) as to any matter with respect to which a 
       separate vote of any class or series is required by the Investment 
       Company Act of 1940, as amended, or by the Maryland General 
       Corporation Law, such requirement as to a separate vote by that class 
       or series shall apply in lieu of Single Class voting as described 
       above; (ii) in the event that the separate vote requirements referred 
       to in (i) above apply with respect to one or more classes or series, 
       then, subject to (iii) below, the shares of all other classes or 
       series shall vote as a single class or series; and (iii) as to any 
       matter which does not affect the interest of a particular class or 
       series, only the holders of shares of the one or more affected classes 
       shall be entitled to vote. 

        (g) The establishment and designation of any series or class of 
       Common Stock shall be effective upon the adoption by a majority of the 
       then Directors of a resolution setting forth such establishment and 
       designation and the relative rights and preferences of such series or 
       class, or as otherwise provided in such instrument, and the filing 
       with the proper authority of the State of Maryland of Articles 
       Supplementary setting forth such establishment and designation and 
       relative rights and preferences. 

   SECOND: The Amendment was recommended by the Corporation's Board of 
Directors and approved by the holders of a majority of the outstanding common 
stock entitled to vote thereon. 

                                      3           
<PAGE>

    IN WITNESS WHEREOF, Dean Witter Natural Resource Development Securities 
Inc. has caused these presents to be signed in its name and on its behalf by 
its President and witnessed by its Secretary on May 23, 1997. 


WITNESS:                                  DEAN WITTER NATURAL RESOURCE 
                                          DEVELOPMENT SECURITIES INC. 



                                         By: 
- --------------------------------------       --------------------------------
Barry Fink                                   Charles A. Fiumefreddo 
Secretary                                    President 


   THE UNDERSIGNED, President of Dean Witter Natural Resource Development 
Securities Inc. who executed on behalf of the Corporation the foregoing 
Articles of Amendment of which this certificate is made a part, hereby 
acknowledges in the name and on behalf of said Corporation the foregoing 
Articles of Amendment to be the corporate act of said Corporation and hereby 
certifies that to the best of his knowledge, information, and belief the 
matters and facts set forth therein with respect to the authorization and 
approval thereof are true in all material respects under the penalties of 
perjury. 

                                          
                                          ----------------------------------- 
                                          Charles A. Fiumefreddo 
                                          President 


                                       4

<PAGE>
            DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.

                             ARTICLES SUPPLEMENTARY


          Dean Witter Natural Resource Development Securities Inc., a Maryland
corporation, having its principal office in Baltimore City, Maryland 21202
(hereinafter called the "Corporation"), hereby certifies to the State Department
of Assessments and Taxation of Maryland that:


          FIRST:  In accordance with Section 2-105(c) of the Maryland General
Corporation Law, the Board of Directors ("Board") has increased the authorized
capital stock of the Corporation to 2,000,000,000 shares of Common Stock, par
value $.01 per share.


          SECOND:  Pursuant to authority expressly vested in the Board of
Directors of the Corporation by Article V, Section 2(g) of the Articles of
Incorporation (the "Articles"), the Board has duly established three additional
classes of the Common Stock, par value $.01 per share, of the Corporation to be
classified as Class A, Class C and Class D (the "Additional Classes") of which
500,000,000, 500,000,000 and 500,000,000 shares, respectively, have been
authorized and the Board has provided for the issuance of such Additional
Classes.


          THIRD:  The terms applicable to the Additional Classes of the Common
Shares as set by the Board of Directors, including preferences, conversion or
other rights, voting powers, restrictions, limitations as to dividends,
qualifications, or terms or conditions of redemption, are the same as the terms
of the existing class of Common Stock ("Existing Class") which are set forth in
the Articles, except that:

          (1)  The Class A, Class C, and Class D shares of capital stock shall
     represent the same interest in the Corporation and have, except as provided
     to the contrary in these Articles Supplementary or in any subsequently
     filed charter document, identical voting, dividend, liquidation, and other
     rights, terms and conditions with any other shares of capital stock;
     provided however, that notwithstanding anything in the Charter of the
     Corporation to the contrary, shares of the various Classes of capital stock
     shall be subject to such different combination of sales charges, ongoing
     fees and other features, as may be established from time to time by the
     Board of Directors in accordance with the Investment Company Act of 1940,
     as amended, and any rules or regulations promulgated thereunder (the "1940
     Act") and applicable rules and regulations of the National Association of
     Securities Dealers, Inc. (the "NASD") and as shall be set forth in the
     applicable prospectus for the shares or the Corporation's then-current
     Multiple-Class Plan adopted pursuant to Rule 18f-3 under the 1940 Act or
     any successor provision thereto; and provided further that expenses paid
     pursuant to a plan of distribution under Rule 12b-1 of the 1940 Act (and
     certain other expenses that are related solely to a particular Class of 

<PAGE>

     capital stock, as the Board of Directors may determine), shall be borne
     solely by such Class and shall be appropriately reflected (in the manner
     determined by the Board of Directors) in the net asset value, dividends,
     distribution and liquidation rights of the shares of the Class in question;

          (2)  On each matter submitted to a vote of the stockholders, including
     without limitation, the provisions of any distribution plan adopted by the
     Board of Directors pursuant to Rule 12b-1 under the 1940 Act, each holder
     of a Share shall be entitled to one vote for each such Share standing in
     his name on the books of the Corporation irrespective of the Class thereof,
     and all Shares of all Classes shall vote as a single class ("Single Class
     Voting"); provided, however, that (A) as to any matter with respect to
     which a separate vote of any Class as required or permitted by the 1940 Act
     or would be required under the Maryland General Corporation Law, such
     requirements as to a separate vote by that Class, as applicable, shall
     apply in lieu of Single Class Voting as described above; (B) in the event
     that the separate vote requirements referred to in (A) above apply with
     respect to one or more Classes, then the Shares of all other Classes shall
     vote together as a single Class, unless such Shares are not required to be
     voted under clause (C) of this paragraph or otherwise under law; and (C) as
     to any matter which does not materially affect the interest of a particular
     Class, only the holders of Shares of the one or more affected Classes shall
     be entitled to vote; and

          (3)  Shares of the Class B Common Stock shall be automatically
     converted into shares of the Class A at such time or times, not to exceed
     20 years from the date of initial issuance, as shall be set forth in the
     applicable prospectus or Multiple-Class Plan, as amended from time to time,
     and in the event no such provision is set forth in the prospectus or
     Multiple Class Plan, shall not be so convertible.


          FOURTH:  The Corporation is registered as an open-end investment
company under the 1940 Act.


          FIFTH:  (a)  As of immediately before the increase of authorized
shares, the total number of shares of stock of all classes which the Corporation
had authority to issue was 500,000,000 shares of Common Stock, par value $.01
per share.  As increased, the total number of shares of stock of all classes
which the Corporation has authority to issue is 2,000,000,000 shares of Common
Stock, par value $.01 per share.

          (b)  As of immediately before the increase, 500,000,000 shares of the
Existing Class with an aggregate par value of $5,000,000 were authorized.  As
increased, 500,000,000 shares of each of the Additional Classes and the Existing
Class  (each a "Class"), with an aggregate par value of $5,000,000 per Class,
are authorized.

          (c)  The aggregate par value of all shares having a par value was
$5,000,000 before the increase and $20,000,000 as increased.


                                       -2-
<PAGE>

          IN WITNESS WHEREOF, Dean Witter Natural Resource Development
Securities Inc. has caused these presents to be signed in its name and on its
behalf by its President and witnessed by its Secretary on July ___, 1997.

WITNESS:                                DEAN WITTER NATURAL
                                        RESOURCE DEVELOPMENT
                                        SECURITIES INC.


                                        By:
- -----------------------------------        -------------------------------------
Barry Fink, Secretary                       Charles A. Fiumefreddo, President


          THE UNDERSIGNED, President of the Corporation, who executed on behalf
of the Corporation Articles Supplementary of which this Certificate is made a
part, hereby acknowledges in the name and on behalf of said Corporation the
foregoing Articles Supplementary to be the corporate act of said Corporation and
hereby certifies that the matters and facts set forth herein with respect to the
authorization and approval thereof are true in all material respects under the
penalties of perjury.



                                   ----------------------------------------
                                   Charles A. Fiumefreddo, President


                                     -3-

<PAGE>

            DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC.


                              ARTICLES OF AMENDMENT
                            CHANGING NAMES OF SERIES
                        PURSUANT TO MGCL SECTION 2-605(B)


     Dean Witter Natural Resource Development Securities Inc., a Maryland
corporation, having its principal office in Baltimore City, Maryland
(hereinafter called the "Corporation"), hereby certifies to the State Department
of Assessments and Taxation of Maryland that:

     FIRST: THE CHARTER OF THE CORPORATION IS HEREBY AMENDED TO PROVIDE AS
FOLLOWS:

          The name and designation of the shares of capital stock issued 
prior to July 28, 1997 is hereby changed to be the Class B shares of capital 
stock; except that the shares purchased with a front-end sales charge prior 
to July 2, 1984 and remaining outstanding (including such proportion of 
shares acquired through reinvestment of dividends and capital gains 
distributions as to the total number of shares acquired prior to July 2, 1984 
bears to the total number of shares purchased and owned by the shareholder as 
of the date hereof) shall also be changed to Class D shares of capital stock.

     SECOND: THE AMENDMENT DOES NOT CHANGE THE OUTSTANDING CAPITAL STOCK OF THE 
CORPORATION OR THE AGGREGATE PAR VALUE THEREOF.

     THIRD: THE FOREGOING AMENDMENT TO THE CHARTER OF THE CORPORATION HAS BEEN
APPROVED BY THE BOARD OF DIRECTORS AND IS LIMITED TO A CHANGE EXPRESSLY
PERMITTED BY SECTION 2-605 OF THE MARYLAND GENERAL CORPORATION LAW.

     FOURTH: THE CORPORATION IS REGISTERED AS AN OPEN-END MANAGEMENT INVESTMENT
COMPANY UNDER THE INVESTMENT COMPANY ACT OF 1940.


                                        1
<PAGE>

     IN WITNESS WHEREOF, the Corporation has caused these presents to be signed
in its name and on it behalf by its President and witnessed by its Secretary on
this ____ day of July, 1997.


                                        DEAN WITTER NATURAL
                                        RESOURCE DEVELOPMENT
                                        SECURITIES INC.


                                        By:
                                           -------------------------------------
                                        Name:  Charles A. Fiumefreddo
                                        Title: President

ATTEST:


- ------------------------------
Name:  Barry Fink
Title: Secretary


          THE UNDERSIGNED, the President of Dean Witter Natural Resource
Development Securities Inc. who executed on behalf of the Corporation the
foregoing Articles of Amendment of which this certificate is made a part, hereby
acknowledges in the name and on behalf of the Corporation the foregoing Articles
of Amendment to be the corporate act of the Corporation and hereby certifies to
the best of his knowledge, information and belief the matters and facts set
forth herein with respect to the authorization and approval thereof are true in
all material respects under the penalties of perjury.


                                        ----------------------------------------
                                        Name:  Charles A. Fiumefreddo
                                        Title: President


                                        2


<PAGE>

                                   BY-LAWS 

                                      OF 

           DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC. 

                   AMENDED AND RESTATED AS OF JUNE 30, 1997 

                                  ARTICLE I 

                                   OFFICES 

   SECTION 1.1. PRINCIPAL OFFICE. The principal office of the Corporation in 
the State of Maryland shall be in the City of Baltimore. 

   SECTION 1.2. OTHER OFFICES. In addition to its principal office in the 
State of Maryland, the Corporation may have an office or offices in the City 
of New York, State of New York, and at such other places as the Board of 
Directors may from time to time designate or the business of the Corporation 
may require. 

                                  ARTICLE II 

                            STOCKHOLDERS' MEETINGS 

   SECTION 2.1. PLACE OF MEETINGS. Meetings of stockholders shall be held at 
such place, within or without the State of Maryland, as may be designated 
from time to time by the Board of Directors. 

   SECTION 2.2. ANNUAL MEETINGS. An annual meeting of stockholders, when 
required, at which the stockholders shall elect a Board of Directors and 
transact such other business as may properly come before the meeting, shall 
be held in June of each year, the precise date in June to be fixed by the 
Board of Directors. Notwithstanding anything to the contrary contained 
herein, the Corporation shall not be required to hold an annual meeting in 
any year in which none of the following is required to be acted upon by 
stockholders under the Investment Company Act of 1940, as amended: 

     (1) election of directors; 

     (2) approval of an investment advisory or management agreement; 

     (3) ratification of the selection of independent accountants; and 

     (4) approval of a distribution plan or agreement; 

provided, however, that a special meeting of stockholders shall promptly be 
called when requested in writing by the recordholders of not less than 10% of 
the Corporation's shares. 

   SECTION 2.3. SPECIAL MEETINGS. Special meetings of stockholders of the 
Corporation shall be held whenever called by the Board of Directors or the 
President of the Corporation. Special meetings of stockholders shall also be 
called by the Secretary upon the written request of the holders of shares 
entitled to vote not less than twenty-five percent (25%) of all the votes 
entitled to be cast at such meeting. Such request shall state the purpose or 
purposes of such meeting and the matters proposed to be acted on thereat. The 
Secretary shall inform such stockholders of the reasonable estimated cost of 
preparing and mailing such notice of the meeting, and upon payment to the 
Corporation of such costs, the Secretary shall give notice stating the 
purpose or purposes of the meeting to all entitled to a vote at such meeting. 
No special meeting need be called upon the request of the holders of shares 
entitled to cast less than a majority of all votes entitled to be cast at 
such meeting, to consider any matter which is substantially the same as a 
matter voted upon at any special meeting of stockholders held during the 
preceding twelve months. 

   SECTION 2.4. NOTICE OF MEETINGS. Written or printed notice of every 
stockholders' meeting stating the place, date and time, and in the case of a 
special meeting the purpose or purposes thereof, shall be 


<PAGE>

given by the Secretary not less than ten (10) nor more than ninety (90) days 
before such meeting to each stockholder entitled to vote at such meeting, 
either by mail or by presenting it to him personally, or by leaving it at his 
residence or usual place of business. If mailed, such notice shall be deemed 
to be given when deposited in the United States mail, postage prepaid, 
directed to the stockholder at his address as it appears on the records of 
the Corporation. 

   SECTION 2.5. QUORUM AND ADJOURNMENT OF MEETINGS. Except as otherwise 
provided by law, by the Charter of the Corporation, or by these By-Laws, at 
all meetings of stockholders the holders of a majority of the shares issued 
and outstanding and entitled to vote thereat, present in person or 
represented by proxy, shall be requisite and shall constitute a quorum for 
the transaction of business. In the absence of a quorum, the stockholders 
present or represented by proxy and entitled to vote thereat shall have power 
to adjourn the meeting from time to time without notice other than 
announcement at the meeting, until a quorum shall be present. At any 
adjourned meeting at which a quorum shall be present, any business may be 
transacted if the meeting had been held as originally called. 

   SECTION 2.6. VOTING RIGHTS, PROXIES. At each meeting of the stockholders 
at which a quorum is present, each holder of stock entitled to vote thereat 
shall be entitled to one vote in person or by proxy, executed in writing by 
the stockholder or his duly authorized attorney-in-fact, for each share of 
stock of the Corporation entitled to vote so registered in his name on the 
books of the Corporation on the date fixed as the record date for the 
determination of stockholders entitled to vote at such meeting. No proxy 
shall be valid after eleven months from its date, unless otherwise provided 
in the proxy. At all meetings of stockholders, unless the voting is conducted 
by inspectors, all questions relating to the qualification of voters and the 
validity of proxies and the acceptance or rejection of votes shall be decided 
by the chairman of the meeting. 

   SECTION 2.7. VOTE REQUIRED. Except as otherwise provided by law, by the 
Charter of the Corporation, or by these By-Laws, at each meeting of 
stockholders at which a quorum is present, all matters shall be decided by a 
majority of the votes cast by the stockholders present in person or 
represented by proxy and entitled to vote with respect to any such matter. 

   SECTION 2.8. ACTION BY STOCKHOLDERS WITHOUT MEETING. Except as otherwise 
provided by law, the provisions of these By-Laws relating to notices and 
meetings to the contrary notwithstanding, any action required or permitted to 
be taken at any meeting of stockholders may be taken without a meeting if a 
consent in writing setting forth the action shall be signed by all the 
stockholders entitled to vote upon the action and such consent shall be filed 
with the records of the Corporation. 

   SECTION 2.9. PRESENCE AT MEETINGS. Presence at meetings of stockholders 
requires physical attendance by the stockholder or his or her proxy at the 
meeting site and does not encompass attendance by telephonic or other 
electronic means. 

                                 ARTICLE III 

                                  DIRECTORS 

   SECTION 3.1. NUMBER AND TERM. The Board of Directors shall consist of not 
less than three (3) and not more than fifteen (15) directors, the number of 
directors to be fixed from time to time within the above-specified limits by 
the affirmative vote of a majority of the whole Board of Directors. At the 
first annual meeting of stockholders and at each meeting thereafter called 
for the purpose of electing directors, the stockholders shall elect directors 
to hold office until their successors are elected and qualify. Directors need 
not be stockholders of the Corporation. 

   SECTION 3.2. POWERS. The business of the Corporation shall be managed by 
the Board of Directors which may exercise all powers of the Corporation and 
do all lawful acts and things which are not by law or by the Charter of the 
Corporation, or by these By-Laws, directed or required to be exercised or 
done exclusively by the stockholders. 

   SECTION 3.3. ORGANIZATIONAL MEETINGS. The first meeting of each newly 
elected Board of Directors for the purposes of organization and the election 
of officers and otherwise shall be held at such time and place as shall be 
specified in a notice given as hereinafter provided for special meetings of 
the Board of Directors, or as shall be specified in a written waiver signed 
by all directors. 

                                       2           
<PAGE>

   SECTION 3.4. REGULAR MEETINGS. Regular meetings of the Board of Directors 
may be held at such time and place as shall be determined from time to time 
by the Board of Directors without further notice. 

   SECTION 3.5. SPECIAL MEETINGS. Special meetings of the Board of Directors 
may be called at any time by the President and shall be called by such 
President or the Secretary upon the written request of any two (2) directors. 

   SECTION 3.6. NOTICE OF SPECIAL MEETINGS. Written notice of special 
meetings of the Board of Directors, stating the place, date and time thereof, 
shall be given not less than two (2) days before such meeting to each 
director, personally, by telegram, by mail, or by leaving such notice at his 
place of residence or usual place of business. If mailed, such notice shall 
be deemed to be given when deposited in the United States mail, postage 
prepaid, directed to the director at his address as it appears on the records 
of the Corporation. 

   SECTION 3.7. TELEPHONE MEETINGS. Any member or members of the Board of 
Directors or of any committee designated by the Board, may participate in a 
meeting of the Board, or any such committee, as the case may be, by means of 
a conference telephone or similar communications equipment if all persons 
participating in the meeting can hear each other at the same time. 
Participation in a meeting by these means constitutes presence in person at 
the meeting. This Section 3.7 shall not be applicable to meetings held for 
the purpose of voting in respect of approval of contracts or agreements 
whereby a person undertakes to serve or act as investment adviser of, or 
principal underwriter for, the Corporation. 

   SECTION 3.8. QUORUM, VOTING AND ADJOURNMENT OF MEETINGS. At all meetings 
of the Board of Directors, a majority of the whole Board shall be requisite 
to and shall constitute a quorum for the transaction of business. If a quorum 
is present, the affirmative vote of a majority of the directors present shall 
be the act of the Board of Directors, unless the concurrence of a greater 
proportion is expressly required for such action by law, the Charter of the 
Corporation or these By-Laws. If at any meeting of the Board there be less 
than a quorum present, the directors present thereat may adjourn the meeting 
from time to time, without notice other than announcement at the meeting 
until a quorum shall have been obtained. 

   SECTION 3.9. REMOVAL. Any one or more of the directors may be removed, 
either with or without cause, at any time, by the affirmative vote of the 
stockholders holding a majority of the outstanding shares entitled to vote 
for the election of directors. (For purposes of determining the circumstances 
and procedures under which such removal of directors may take place, the 
provisions of Section 16(c) of the Investment Company Act of 1940 shall be 
applicable to the same extent as if the Corporation were subject to the 
provisions of that Section.) The successor or successors of any director or 
directors so removed may be elected by the stockholders entitled to vote 
thereon at the same meeting to fill any resulting vacancies for the unexpired 
term of removed directors. Except as provided by law, pending such an 
election (or in the absence of such an election), the successor or successors 
of any director or directors so removed may be chosen by the Board of 
Directors. 

   SECTION 3.10. VACANCIES. Except as otherwise provided by law, any vacancy 
occurring in the Board of Directors and newly created directorships resulting 
from an increase in the authorized number of directors may be filled by the 
vote of a majority of the directors then in office or, if only one director 
shall then be in office, by such director. A director elected by the Board of 
Directors to fill a vacancy shall be elected to hold office until the next 
annual meeting of stockholders or until his successor is elected and 
qualifies. 

   SECTION 3.11. ACTION BY DIRECTORS WITHOUT MEETING. The provisions of these 
By-Laws covering notices and meetings to the contrary notwithstanding, and 
except as required by law, any action required or permitted to be taken at 
any meeting of the Board of Directors may be taken without a meeting if a 
consent in writing setting forth the action shall be signed by all of the 
directors entitled to vote upon the action and such written consent is filed 
with the minutes of proceedings of the Board of Directors. 

   SECTION 3.12. EXPENSES AND FEES. Each director may be allowed expenses, if 
any, for attendance at each regular or special meeting of the Board of 
Directors and each director who is not an officer or employee of the 
Corporation or of its investment manager or underwriter or of any corporate 
affiliate of 

                                        3           
<PAGE>

any of said persons shall receive for services rendered as a director of the 
Corporation such compensation as may be fixed by the Board of Directors. 
Nothing herein contained shall be construed to preclude any director from 
serving the Corporation in any other capacity and receiving compensation 
therefor. 

   SECTION 3.13. EXECUTION OF INSTRUMENTS AND DOCUMENTS AND SIGNING OF CHECKS 
AND OTHER OBLIGATIONS AND TRANSFERS. All instruments, documents and other 
papers shall be executed in the name and on behalf of the Corporation and all 
checks, notes, drafts and other obligations for the payment of money by the 
Corporation shall be signed, and all transfer of securities standing in the 
name of the Corporation shall be executed, by the President, any Vice 
President or the Treasurer or by any one or more officers or agents of the 
Corporation as shall be designated for that purpose by vote of the Board of 
Directors; notwithstanding the above, nothing in this Section 3.13 shall be 
deemed to preclude the electronic authorization, by designated persons, of 
the Corporation's Custodian to transfer assets of the Corporation. 

   SECTION 3.14. CONTRACTS. Except as otherwise provided by law or by the 
Charter of the Corporation, no contract or transaction between the 
Corporation and any partnership or corporation, and no act of the 
Corporation, shall in any way be affected or invalidated by the fact that any 
officer or director of the Corporation is pecuniarily or otherwise interested 
therein or is a member, officer or director of such interest shall be known 
to the Board of Directors of the Corporation. Specifically, but without 
limitation of the foregoing, the Corporation may enter into one or more 
contracts appointing Dean Witter InterCapital Inc. investment manager of the 
Corporation, and may otherwise do business with Dean Witter InterCapital 
Inc., notwithstanding the fact that one or more of the directors of the 
Corporation and some or all of its officers are, have been or may become 
directors, officers, members, employees, or stockholders of Dean Witter 
InterCapital Inc.; and in the absence of fraud, the Corporation and Dean 
Witter InterCapital Inc. may deal freely with each other, and neither such 
contract appointing Dean Witter InterCapital Inc. investment manager to the 
Corporation nor any other contract or transaction between the Corporation and 
Dean Witter InterCapital Inc. shall be invalidated or in any wise affected 
thereby, nor shall any director or officer of the Corporation by reason 
thereof be liable to the Corporation or to any stockholder or creditor of the 
Corporation or to any other person for any loss incurred under or by reason 
of any such contract or transaction. For purposes of this paragraph, any 
reference to "Dean Witter InterCapital Inc." shall be deemed to include said 
company and any parent, subsidiary or affiliate of said company and any 
successor (by merger, consolidation or otherwise) to said company or any such 
parent, subsidiary or affiliate. 

   SECTION 3.15. INDEMNIFICATION OF DIRECTORS, OFFICERS, EMPLOYEES AND 
AGENTS. (a) The Corporation shall indemnify any person who was or is a party 
or is threatened to be made a party to any threatened, pending, or completed 
action, suit, or proceeding, whether civil, criminal, administrative, or 
investigative (other than an action by or in the right of the Corporation) by 
reason of the fact that he is or was a director, officer, employee or agent 
of the Corporation. The indemnification shall be against expenses, including 
attorneys' fees, judgments, fines, and amounts paid in settlement, actually 
and reasonably incurred by him in connection with the action, suit, or 
proceeding, if he acted in good faith and in a manner he reasonably believed 
to be in or not opposed to the best interests of the Corporation, and, with 
respect to any criminal action or proceeding, had no reasonable cause to 
believe his conduct was unlawful. Directors acting in their official capacity 
must act in good faith and in a manner reasonably believed to be in the best 
interest of the Corporation. The termination of any action, suit, or 
proceeding by judgment, order, settlement, conviction, or upon a plea of nolo 
contendere or its equivalent shall not, of itself, create a presumption that 
the person did not act in good faith and in a manner which he reasonably 
believed to be in or not opposed to the best interests of the Corporation, 
and, with respect to any criminal action or proceeding, had reasonable cause 
to believe that his conduct was unlawful. A director may not be indemnified 
in respect of any proceeding charging improper personal benefit to the 
director, whether or not involving action in the director's official 
capacity, in which the director was adjudged to be liable on the basis that 
personal benefit was improperly received. 

   (b) The Corporation shall indemnify any person who was or is a party or is 
threatened to be made a party to any threatened, pending or completed action 
or suit by or on behalf of the Corporation to obtain a judgment or decree in 
its favor by reason of the fact that he is or was a director, officer, 
employee, 

                                         4           
<PAGE>

or agent of the Corporation. The indemnification shall be against expenses, 
including attorney's fees actually and reasonably incurred by him in 
connection with the defense or settlement of the action or suit if he acted 
in good faith and in a manner he reasonably believed to be in or not opposed 
to the best interests of the Corporation: except that no indemnification 
shall be made in respect of any claim, issue, or matter as to which the 
person has been adjudged to be liable for negligence or misconduct in the 
performance of his duty to the Corporation, except to the extent that the 
court in which the action or suit was brought, or a court of equity in the 
county in which the Corporation has its principal office, determines upon 
application that, despite the adjudication of liability, but in view of all 
circumstances of the case, the person is fairly and reasonably entitled to 
indemnity for those expenses which the court shall deem proper, provided such 
director or officer is not adjudged to be liable by reason of his willful 
misfeasance, bad faith, gross negligence or reckless disregard of the duties 
involved in the conduct of his office. 

   (c) To the extent that a director, officer, employee, or agent of the 
Corporation has been successful on the merits or otherwise in defense of any 
action, suit or proceeding referred to in subsection (a) or (b) or in defense 
of any claim, issue or matter therein, he shall be indemnified against 
expenses, including attorneys' fees, actually and reasonably incurred by him 
in connection therewith. 

   (d)(1) Unless a court orders otherwise, any indemnification under 
subsection (a) or (b) of this section may be made by the Corporation only as 
authorized in the specific case after a determination that indemnification of 
the director, officer, employee, or agent is proper in the circumstances 
because he has met the applicable standard of conduct set forth in subsection 
(a) or (b). 

      (2) The determination shall be made: 

        (i) By the Board of Directors, by a majority vote of a quorum which 
     consists of directors who were not parties to the action ("non-party 
     directors"), suit or proceeding; or if a quorum of non-party directors 
     is not obtainable by a majority vote of a committee of at least two 
     non-party directors; or 

       (ii) If the required quorum is not obtainable; or if a quorum of 
     disinterested directors so directs, by independent legal counsel in a 
     written opinion; or 

      (iii) By the stockholders. 

      (3) Authorization of indemnification and determination as to 
reasonableness of expenses shall be made in the same manner as the 
determination that indemnification is permissible. However, if the 
determination that indemnification is permissible is made by independent 
legal counsel, authorization of indemnification and determination as to 
reasonableness of expenses shall be made by a committee of non-party 
directors or by the non-party quorum of the Board, or if neither exists, by 
the full Board. 

      (4) Notwithstanding the provisions of paragraphs (1) and (2) of this 
subsection (d), no person shall be entitled to indemnification for any 
liability, whether or not there is an adjudication of liability, arising by 
reason of willful misfeasance, bad faith, gross negligence, or reckless 
disregard of duties as described in Sections 17(h) and (i) of the Investment 
Company Act of 1940, as amended ("disabling conduct"). A person shall be 
deemed not liable by reason of disabling conduct if, either: 

       (i) a final decision on the merits is made by a court or other body 
     before whom the proceeding was brought that the person to be indemnified 
     ("indemnitee") was not liable by reason of disabling conduct; or 

      (ii) in the absence of such a decision, a reasonable determination, 
     based upon a review of the facts, that the indemnitee was not liable by 
     reason of disabling conduct, is made by either-- 

          (A) a majority of a quorum of directors who are neither "interested 
         persons" of the Corporation, as defined in Section 2(a)(19) of the 
         Investment Company Act of 1940, as amended, nor parties to the 
         action, suit or proceeding, or 

          (B) an independent legal counsel in a written opinion. 

                                        5           
<PAGE>

   (e) Expenses, including attorneys' fees, incurred by a director, officer, 
employee or agent of the Corporation in defending a civil or criminal action, 
suit or proceeding may be paid by the Corporation in advance of the final 
disposition thereof if: 

    (1) authorized in the specific case by the Board of Directors; and 

    (2) the Corporation receives an undertaking by or on behalf of the 
   director, officer, employee or agent of the Corporation to repay the 
   advance if it is not ultimately determined that such person is entitled to 
   be indemnified by the Corporation; and 

    (3) either 

          (i) such person provides a security for his undertaking, or 

         (ii) the Corporation is insured against losses by reason of any 
       lawful advances, or 

        (iii) a determination, based on a review of readily available facts, 
       that there is reason to believe that such person ultimately will be 
       found entitled to indemnification, is made by either-- 

            (A) a majority of a quorum which consists of directors who are 
           neither "interested persons" of the Corporation, as defined in 
           Section 2(a)(19) of the Investment Company Act of 1940, as 
           amended, nor parties to the action, suit or proceeding, or 

            (B) an independent legal counsel in a written opinion. 

   (f) The indemnification provided by this Section shall not be deemed 
exclusive of any other rights to which a person may be entitled under any 
by-law, agreement, vote of stockholders or disinterested directors or 
otherwise, both as to action in his official capacity and as to action in 
another capacity while holding the office, and shall continue as to a person 
who has ceased to be a director, officer, employee, or agent and inure to the 
benefit of the heirs, executors and administrators of such person. 

   (g) The Corporation may purchase and maintain insurance on behalf of any 
person who is or was a director, officer, employee, or agent of the 
Corporation, against any liability asserted against him and incurred by him 
in any such capacity, or arising out of his status as such. However, in no 
event will the Corporation pay for that portion of the premium, if any, for 
insurance to indemnify any officer or director against liability for any act 
for which the Corporation itself is not permitted to indemnify him. 

   (h) Nothing contained in this Section shall be construed to protect any 
director or officer of the Corporation against any liability to the 
Corporation or to its security holders to which he would otherwise be subject 
by reason of willful misfeasance, bad faith, gross negligence or reckless 
disregard of the duties involved in the conduct of his office. 

   (i) Any indemnification of, or advance of expenses to, a director in 
accordance with this Section, if arising out of a proceeding by or in the 
right of the Corporation, shall be reported in writing to the shareholders 
with the notice of the next stockholders' meeting or prior to the meeting. 

                                  ARTICLE IV 

                                  COMMITTEES 

   SECTION 4.1. EXECUTIVE AND OTHER COMMITTEES.  The Board of Directors, by 
resolution adopted by a majority of the whole Board, may designate an 
Executive Committee and/or other committees, each committee to consist of two 
(2) or more of the directors of the Corporation and may delegate to such 
committees, in the intervals between meetings of the Board of Directors, any 
or all of the powers of the Board of Directors in the management of the 
business and affairs of the Corporation, except the power to: declare 
dividends or distributions of stock; issue stock; recommend to stockholders 
any action requiring stockholder approval; amend the By-Laws of the 
Corporation; or approve any merger or share exchange which does not require 
shareholder approval. In the absence of any member of any such committee, the 
members thereof present at any meeting, whether or not they constitute a 
quorum, may appoint a member of the Board of Directors to act in place of 
such absent member. Each such committee shall keep a record of its 
proceedings. 

                                      6           
<PAGE>

   The Executive Committee and any other committee shall fix its own rules or 
procedure, but the presence of at least fifty percent (50%) of the members of 
the whole committee shall in each case be necessary to constitute a quorum of 
the committee and the affirmative vote of the majority of the members of the 
committee present at the meeting shall be necessary to take action. 

   All actions of the Executive Committee shall be reported to the Board of 
Directors at the meeting thereof next succeeding to the taking of such 
action. 

   SECTION 4.2. ADVISORY COMMITTEE. The Board of Directors may appoint an 
advisory committee which shall be composed of persons who do not serve the 
Corporation in any other capacity and which shall have advisory functions 
with respect to the investments of the Corporation, but which shall have no 
power to determine that any security or other investment shall be purchased, 
sold or otherwise disposed of by the Corporation. The number of persons 
constituting any such advisory committee shall be determined from time to 
time by the Board of Directors. The members of any such advisory committee 
may receive compensation for their services and may be allowed such fees and 
expenses for the attendance at meetings as the Board of Directors may from 
time to time determine to be appropriate. 

   SECTION 4.3. COMMITTEE ACTION WITHOUT MEETING. The provisions of these 
By-Laws covering notices and meetings to the contrary notwithstanding, and 
except as required by law, any action required or permitted to be taken at 
any meeting of any Committee of the Board appointed pursuant to Section 4.1 
of these By-Laws may be taken without a meeting if a consent in writing 
setting forth the action shall be signed by all members of the Committee 
entitled to vote upon the action and such written consent is filed with the 
records of the proceedings of the Committee. 

                                  ARTICLE V 

                                   OFFICERS 

   SECTION 5.1. EXECUTIVE OFFICERS.  The executive officers of the 
Corporation shall be a Chairman of the Board, a President, one or more Vice 
Presidents, a Secretary and a Treasurer. The Chairman of the Board shall be 
selected from among the directors but none of the other executive officers 
need be a member of the Board of Directors. Two or more offices, except those 
of President and any Vice President, may be held by the same person, but no 
officer shall execute, acknowledge or verify any instrument in more than one 
capacity. The executive officers of the Corporation shall be elected annually 
by the Board of Directors at its organizational meeting following the meeting 
of stockholders at which the Board of Directors was elected, and each 
executive officer so elected shall hold office until his successor is elected 
and has qualified. 

   SECTION 5.2. OTHER OFFICERS AND AGENTS. The Board of Directors may also 
elect one or more Assistant Vice Presidents, Assistant Secretaries and 
Assistant Treasurers and may elect, or may delegate to the President the 
power to appoint, such other officers and agents as the Board of Directors 
shall at any time or from time to time deem advisable. 

   SECTION 5.3. TERM, REMOVAL AND VACANCIES. Each officer of the Corporation 
shall hold office until his successor is elected and has qualified. Any 
officer or agent of the Corporation may be removed by the Board of Directors 
whenever, in its judgment, the best interests of the Corporation will be 
served thereby, but such removal shall be without prejudice to the 
contractual rights, if any, of the person so removed. 

   SECTION 5.4. COMPENSATION OF OFFICERS. The compensation of officers and 
agents of the Corporation shall be fixed by the Board of Directors, or by the 
President to the extent provided by the Board of Directors with respect to 
officers appointed by the President. 

   SECTION 5.5. POWER AND DUTIES. All officers and agents of the Corporation, 
as between themselves and the Corporation, shall have such authority and 
perform such duties in the management of the Corporation as may be provided 
in or pursuant to these By-Laws, or, to the extent not so provided, as may be 
prescribed by the Board of Directors; provided, that no rights of any third 
party shall be affected or impaired by any such By-Law or resolution of the 
Board unless he has knowledge thereof. 

                                       7           
<PAGE>

   SECTION 5.6. THE CHAIRMAN OF THE BOARD. The Chairman shall preside at all 
meetings of the stockholders and of the Board of Directors; shall be a 
signatory on all Annual and Semi-Annual Reports as may be sent to 
stockholders; and he shall perform such other duties as the Board of 
Directors may from time to time prescribe. 

   SECTION 5.7. THE PRESIDENT. (a) The President shall be the chief executive 
officer of the Corporation; he shall have general and active management of 
the business of the Corporation, shall see that all orders and resolutions of 
the Board of Directors are carried into effect, and, in connection therewith, 
shall be authorized to delegate to one or more Vice Presidents such of his 
powers and duties at such times and in such manner as he may deem advisable. 

   (b) In the absence of the Chairman, the President shall preside at all 
meetings of the stockholders and the Board of Directors; and he shall perform 
such other duties as the Board of Directors may, from time to time, 
prescribe. 

   SECTION 5.8. THE VICE PRESIDENTS. The Vice Presidents shall be of such 
number and shall have such titles as may be determined from time to time by 
the Board of Directors. The Vice President, or, if there be more than one, 
the Vice Presidents in the order of their seniority as may be determined from 
time to time by the Board of Directors shall, in the absence or disability of 
the President, exercise the powers and perform the duties of the President; 
and he or they shall perform such other duties as the Board of Directors or 
the President may from time to time prescribe. 

   SECTION 5.9. THE ASSISTANT VICE PRESIDENTS. The Assistant Vice President, 
or, if there be more than one, the Assistant Vice Presidents, shall perform 
such duties and have such powers as may be assigned them from time to time by 
the Board of Directors or the President. 

   SECTION 5.10. THE SECRETARY. The Secretary shall attend all meetings of 
the Board of Directors and all meetings of the stockholders and record all 
the proceedings of the meetings of the stockholders and of the Board of 
Directors in a book to be kept for that purpose, and shall perform like 
duties for the standing committees when required. He shall give, or cause to 
be given, notice of all meetings of the stockholders and special meetings of 
the Board of Directors, and shall perform such other duties and have such 
powers as the Board of Directors, may from time to time prescribe. He shall 
keep in safe custody the seal of the Corporation and affix or cause the same 
to be affixed to any instrument requiring it, and, when so affixed, it shall 
be attested by his signature or by the signature of an Assistant Secretary. 

   SECTION 5.11. THE ASSISTANT SECRETARIES. The Assistant Secretary, or, if 
there be more than one, the Assistant Secretaries in the order determined by 
the Board of Directors or the President, shall in the absence or disability 
of the Secretary, perform the duties and exercise the powers of the Secretary 
and shall perform such duties and have such other powers as the Board of 
Directors or the President may from time to time prescribe. 

   SECTION 5.12. THE TREASURER. The Treasurer shall be the chief financial 
officer of the Corporation. He shall keep or cause to be kept full and 
accurate accounts or receipts and disbursements in books belonging to the 
Corporation, and he shall render to the Board of Directors whenever any of 
them require it, an account of his transactions as Treasurer and of the 
financial condition of the Corporation; and he shall perform such other 
duties as the Board of Directors may from time to time prescribe. 

   SECTION 5.13. THE ASSISTANT TREASURERS. The Assistant Treasurer, or, if 
there shall be more than one, the Assistant Treasurers in the order 
determined by the Board of Directors or the President, shall, in the absence 
or disability of the Treasurer, perform the duties and exercise the powers of 
the Treasurer and shall perform such other duties and have such powers as the 
Board of Directors, or the President, may from time to time prescribe. 

   SECTION 5.14. DELEGATION OF DUTIES. Whenever an officer is absent or 
disabled, or whenever for any reason the Board of Directors may deem it 
desirable, the Board may delegate the powers and duties of an officer or 
officers to any other officer or officers or to any Director or Directors. 

                                       8           
<PAGE>

                                  ARTICLE VI 

                                CAPITAL STOCK 

   SECTION 6.1. ISSUANCE OF STOCK. The Corporation shall not issue its shares 
of capital stock except as approved by the Board of Directors. 

   SECTION 6.2. CERTIFICATES OF STOCK. Certificates for shares of each class 
of the capital stock of the Corporation shall be in such form and of such 
design as the Board of Directors shall approve, subject to the right of the 
Board of Directors to change such form and design at any time or from time to 
time, and shall be entered in the books of the Corporation as they are 
issued. Each such certificate shall bear a distinguishing number; shall 
exhibit the holder's name and certify the number of full shares owned by such 
holder; shall be signed by or in the name of the Corporation by the 
President, or a Vice President or an Assistant Treasurer, and countersigned 
by the Secretary or an Assistant Secretary or the Treasurer of the 
Corporation; shall be sealed with the corporate seal; and shall contain such 
recitals as may be required by law. Where any stock certificate is signed by 
a Transfer Agent or by a Registrar, the signature of such corporate officers 
and the corporate seal may be facsimile, printed or engraved. The Corporation 
may, at its option, defer the issuance of a certificate or certificates to 
evidence shares of capital stock owned of record by any stockholder until 
such time as demand therefor shall be made upon the Corporation or its 
Transfer Agent, but upon the making of such demand each stockholder shall be 
entitled to such certificate or certificates. 

   In case any officer or officers who shall have signed, or whose facsimile 
signature or signatures shall appear on, any such certificate or certificates 
shall cease to be such officer or officers of the Corporation, whether 
because of death, resignation or otherwise, before such certificate or 
certificates shall have been delivered by the Corporation, such certificate 
or certificates shall, nevertheless, be adopted by the Corporation and be 
issued and delivered as though the person or persons who signed such 
certificate or certificates or whose facsimile signature or signatures shall 
appear therein had not ceased to be such officer or officers of the 
Corporation. 

   No certificate shall be issued for any share of stock until such share is 
fully paid. 

   SECTION 6.3. TRANSFER OF STOCK. Transfers of shares of the capital stock 
of the Corporation shall be made only on the books of the Corporation by the 
holder thereof, or by his attorney thereunto duly authorized by a power of 
attorney duly executed and filed with the Corporation or a Transfer Agent of 
the Corporation, if any, upon written request in proper form if no share 
certificate has been issued, or in the event such certificate has been 
issued, upon presentation and surrender in proper form of said certificate. 

   SECTION 6.4. RECORD DATE. The Board of Directors may fix in advance a date 
as the record date for the purpose of determining stockholders entitled to 
notice of, or to vote at, any meeting of stockholders, or stockholders 
entitled to receive payment of any dividend or the allotment of any rights, 
or in order to make a determination of stockholders for any other purpose. 
Such date, in any case shall be not more than ninety (90) days, and in case 
of a meeting of stockholders not less than ten (10) days prior to the date on 
which particular action requiring such determination of stockholders is to be 
taken. In lieu of fixing a record date the Board of Directors may provide 
that the stock transfer books shall be closed for a stated period but not to 
exceed, in any case, twenty (20) days. If the stock transfer books are closed 
for the purpose of determining stockholders entitled to notice of a vote at a 
meeting of stockholders, such books shall be closed for at least ten (10) 
days immediately preceding such meeting. 

   SECTION 6.5. LOST, STOLEN, DESTROYED AND MULTILATED CERTIFICATES. The 
Board of Directors may direct a new certificate or certificates to be issued 
in place of any certificate or certificates theretofore issued by the 
Corporation alleged to have been lost, stolen or destroyed, upon satisfactory 
proof of such loss, theft, or destruction; and the Board of Directors may, in 
its discretion, require the owner of the lost, stolen or destroyed 
certificate, or his legal representative, to give to the Corporation and to 
such Registrar, Transfer Agent and/or Transfer Clerk as may be authorized or 
required to countersign such new certificate or certificates, a bond in such 
sum and of such type as they may direct, and with such surety or sureties, as 
they may direct, as indemnity against any claim that may be against them or 
any of them on account of or in connection with the alleged loss, theft or 
destruction of any such certificate. 

                                       9           
<PAGE>

   SECTION 6.6. REGISTERED OWNERS OF STOCK. The Corporation shall be entitled 
to recognize the exclusive right of a person registered on its books as the 
owner of shares of stock to receive dividends, and to vote as such owner, and 
to hold liable for calls and assessments a person registered on its books as 
the owner of shares of stock, and shall not be bound to recognize any 
equitable or other claim to or interest in such share or shares on the part 
of any other person, whether or not it shall have express or other notice 
thereof, except as otherwise provided by the laws of Maryland. 

   SECTION 6.7. FRACTIONAL DENOMINATIONS. Subject to any applicable 
provisions of law and the Charter of the Corporation, the Corporation may 
issue shares of its capital stock in fractional denominations, provided that 
the transactions in which and the terms and conditions upon which shares in 
fractional denominations may be issued may from time to time be limited or 
determined by or under the authority of the Board of Directors. 

                                 ARTICLE VII 

                         SALE AND REDEMPTION OF STOCK 

   SECTION 7.1. SALE OF STOCK. Upon the sale of each share of its Common 
Stock, except as otherwise permitted by applicable laws and regulations, the 
Corporation shall receive in cash or in securities not less than the current 
net asset value thereof, exclusive of any distributing commission or 
discount, and in no event less than the par value thereof. 

   SECTION 7.2. REDEMPTION OF STOCK. Subject to and in accordance with any 
applicable laws and regulations and any applicable provisions of the 
Corporation's Articles of Incorporation, the Corporation shall redeem all 
outstanding shares of its capital stock duly delivered or offered for 
redemption by any registered stockholder in a manner prescribed by or under 
authority of the Board of Directors. Any shares so delivered or offered for 
redemption shall be redeemed at a redemption price prescribed by the Board of 
Directors in accordance with applicable laws and regulations; provided that 
in no event shall such price be less than the applicable net asset value of 
such shares. The Corporation may redeem, at current net asset value, shares 
not offered for redemption held by any shareholder whose shares have a value 
of less than $100, or such lesser amount as may be fixed by the Board of 
Directors; provided that before the Corporation redeems such shares it must 
notify the shareholder that the value of his shares is less than $100 and 
allow him 60 days to make an additional investment in an amount which will 
increase the value of his account to $100 or more. The Corporation shall pay 
redemption prices in cash. 

                                 ARTICLE VIII 

                         DIVIDENDS AND DISTRIBUTIONS 

   Subject to any applicable provisions of law and the Charter of the 
Corporation, dividends and distributions upon the Common Stock of the 
Corporation may be declared at such intervals as the Board of Directors may 
determine, in cash, in securities or other property, or in shares of stock of 
the Corporation, from any sources permitted by law, all as the Board of 
Directors shall from time to time determine. 

   Inasmuch as the computation of net income and net profits from the sale of 
securities or other properties for federal income tax purposes may vary from 
the computation thereof on the books of the Corporation, the Board of 
Directors shall have power, in its discretion, to distribute as income 
dividends and as capital gain distributions, respectively, amounts sufficient 
to enable the Corporation to avoid or reduce liability for federal income 
taxes. 

                                  ARTICLE IX 

                              BOOKS AND RECORDS 

   SECTION 9.1. LOCATION. The books and records of the Corporation may be 
kept outside the State of Maryland at such place or places as the Board of 
Directors may from time to time determine, except as otherwise required by 
law. 

                                        10
<PAGE>

   SECTION 9.2. STOCK LEDGERS. The Corporation shall maintain at the office 
of its Transfer Agent an original stock ledger containing the names and 
addresses of all stockholders and the number of shares held by each 
stockholder. Such stock ledger may be in written form or any other form 
capable of being converted into written form within a reasonable time for 
visual inspection. 

   SECTION 9.3. ANNUAL STATEMENT. The President or a Vice President or the 
Treasurer shall prepare or cause to be prepared annually a full and correct 
statement of the affairs of the Corporation, including a statement of assets 
and liabilities and a statement of operations for the preceding fiscal year, 
which shall be submitted at the annual meeting of stockholders if such 
meeting be held, and shall be filed within twenty (20) days thereafter at the 
principal office of the Corporation in the State of Maryland. 

                                  ARTICLE X 

                               WAIVER OF NOTICE 

   Whenever any notice of the time, place or purpose of any meeting of 
stockholders, directors, or of any committee is required to be given under 
the provisions of the statute or under the provisions of the Charter of the 
Corporation or these By-Laws, a waiver thereof in writing, signed by the 
person or persons entitled to such notice and filed with the records of the 
meeting, whether before or after the holding thereof, or actual attendance at 
the meeting of Directors or committee in person, shall be deemed equivalent 
to the giving of such notice to such person. 

                                  ARTICLE XI 

                                MISCELLANEOUS 

   SECTION 11.1. SEAL. The Board of Directors shall adopt a corporate seal, 
which shall be in the form of a circle, and shall have inscribed thereon the 
name of the Corporation, the year of its incorporation, and the words 
"Corporate Seal--Maryland." Said seal may be used by causing it or a 
facsimile thereof to be impressed or affixed or reproduced or otherwise. 

   SECTION 11.2. FISCAL YEAR. The fiscal year of the Corporation shall end on 
such date as the Board of Directors may by resolution specify, and the Board 
of Directors may by resolution change such date for future fiscal years at 
any time and from time to time. 

   SECTION 11.3. ORDERS FOR PAYMENT OF MONEY. All orders or instructions for 
the payment of money of the Corporation, and all notes or other evidences of 
indebtedness issued in the name of the Corporation, shall be signed by such 
officer or officers or such other person or persons as the Board of Directors 
may from time to time designate, or as may be specified in or pursuant to the 
agreement between the Corporation and the bank or trust company appointed as 
Custodian of the securities and funds of the Corporation. 

                                 ARTICLE XII 

                     COMPLIANCE WITH FEDERAL REGULATIONS 

   The Board of Directors is hereby empowered to take such action as they may 
deem to be necessary, desirable or appropriate so that the Corporation is or 
shall be in compliance with any federal or state statute, rule or regulation 
with which compliance by the Corporation is required. 

                                        11
<PAGE>

                                 ARTICLE XIII 

                                  AMENDMENTS 

   These By-Laws may be amended, altered, or repealed at any annual or 
special meeting of the stockholders by the affirmative vote of the holders of 
a majority of the shares of capital stock of the Corporation issued and 
outstanding and entitled to vote, provided notice of the general purpose of 
the proposed amendment, alteration or repeal is given in the notice of said 
meeting; or, at any meeting of the Board of Directors, by a vote of a 
majority of the whole Board of Directors, provided, however, that any By-Law 
or amendment or alteration of the By-Laws adopted by the Board of Directors 
may be amended, altered or repealed and any By-Law repealed by the Board of 
Directors may be reinstated, by vote of the stockholders of the Corporation. 

                                        12


<PAGE>
                                                                       EXHIBIT 5

                        INVESTMENT MANAGEMENT AGREEMENT
 
    AGREEMENT made as of the 31st day of May, 1997 by and between Dean Witter
Natural Resource Development Securities Inc., a Maryland corporation
(hereinafter called the "Fund"), and Dean Witter InterCapital Inc., a Delaware
corporation (hereinafter called the "Investment Manager"):
 
    WHEREAS, The Fund is engaged in business as an open-end management
investment company and is registered as such under the Investment Company Act of
1940, as amended (the "Act"); and
 
    WHEREAS, The Investment Manager is registered as an investment adviser under
the Investment Advisers Act of 1940, and engages in the business of acting as
investment adviser; and
 
    WHEREAS, The Fund desires to retain the Investment Manager to render
management and investment advisory services in the manner and on the terms and
conditions hereinafter set forth; and
 
    WHEREAS, The Investment Manager desires to be retained to perform services
on said terms and conditions:
 
    Now, Therefore, this Agreement
 
                              W I T N E S S E T H:
 
that in consideration of the premises and the mutual covenants hereinafter
contained, the Fund and the Investment Manager agree as follows:
 
     1.  The Fund hereby retains the Investment Manager to act as investment 
manager of the Fund and, subject to the supervision of the Directors, to 
supervise the investment activities of the Fund as hereinafter set forth. 
Without limiting the generality of the foregoing, the Investment Manager 
shall obtain and evaluate such information and advice relating to the 
economy, securities and commodities markets and securities and commodities as 
it deems necessary or useful to discharge its duties hereunder; shall 
continuously manage the assets of the Fund in a manner consistent with the 
investment objectives and policies of the Fund; shall determine the 
securities and commodities to be purchased, sold or otherwise disposed of by 
the Fund and the timing of such purchases, sales and dispositions; and shall 
take such further action, including the placing of purchase and sale orders 
on behalf of the Fund, as the Investment Manager shall deem necessary or 
appropriate. The Investment Manager shall also furnish to or place at the 
disposal of the Fund such of the information, evaluations, analyses and 
opinions formulated or obtained by the Investment Manager in the discharge of 
its duties as the Fund may, from time to time, reasonably request.
 
     2.  The Investment Manager shall, at its own expense, maintain such 
staff and employ or retain such personnel and consult with such other persons 
as it shall from time to time determine to be necessary or useful to the 
performance of its obligations under this Agreement. Without limiting the 
generality of the foregoing, the staff and personnel of the Investment 
Manager shall be deemed to include persons employed or otherwise retained by 
the Investment Manager to furnish statistical and other factual data, advice 
regarding economic factors and trends, information with respect to technical 
and scientific developments, and such other information, advice and 
assistance as the Investment Manager may desire. The Investment Manager 
shall, as agent for the Fund, maintain the Fund's records and books of 
account (other than those maintained by the Fund's transfer agent, registrar, 
custodian and other agencies). All such books and records so maintained shall 
be the property of the Fund and, upon request therefor, the Investment 
Manager shall surrender to the Fund such of the books and records so 
requested.
 
     3.  The Fund will, from time to time, furnish or otherwise make 
available to the Investment Manager such financial reports, proxy statements 
and other information relating to the business and affairs of the Fund as the 
Investment Manager may reasonably require in order to discharge its duties 
and obligations hereunder.
 
     4.  The Investment Manager shall bear the cost of rendering the investment
management and supervisory services to be performed by it under this
Agreement, and shall, at its own expense, pay the compensation of the officers
and employees, if any, of the Fund, and provide such office space, facilities
and equipment

<PAGE>

and such clerical help and bookkeeping services as the Fund shall reasonably
require in the conduct of its business. The Investment Manager shall also bear
the cost of telephone service, heat, light, power and other utilities provided
to the Fund.
 
     5.  The Fund assumes and shall pay or cause to be paid all other 
expenses of the Fund, including without limitation: the charges and expenses 
of any registrar, any custodian or depository appointed by the Fund for the 
safekeeping of its cash, portfolio securities or commodities and other 
property, and any stock transfer or dividend agent or agents appointed by the 
Fund; brokers' commissions chargeable to the Fund in connection with 
portfolio transactions to which the Fund is a party; all taxes, including 
securities or commodities issuance and transfer taxes, and fees payable by 
the Fund to federal, state or other governmental agencies; the cost and 
expense of engraving or printing certificates representing shares of the 
Fund; all costs and expenses in connection with the registration and 
maintenance of registration of the Fund and its shares with the Securities 
and Exchange Commission and various states and other jurisdictions (including 
filing fees and legal fees and disbursements of counsel); the cost and 
expense of printing, including typesetting, and distributing prospectuses and 
statements of additional information of the Fund and supplements thereto to 
the Fund's shareholders; all expenses of shareholders' and Directors' 
meetings and of preparing, printing and mailing proxy statements and reports 
to shareholders; fees and travel expenses of Directors or members of any 
advisory board or committee who are not employees of the Investment Manager 
or any corporate affiliate of the Investment Manager; all expenses incident 
to the payment of any dividend, distribution, withdrawal or redemption, 
whether in shares or in cash; charges and expenses of any outside service 
used for pricing of the Fund's shares; charges and expenses of legal counsel, 
including counsel to the Directors of the Fund who are not interested persons 
(as defined in the Act) of the Fund or the Investment Manager, and of 
independent accountants, in connection with any matter relating to the Fund; 
membership dues of industry associations; interest payable on Fund 
borrowings; postage; insurance premiums on property or personnel (including 
officers and Directors) of the Fund which inure to its benefit; extraordinary 
expenses (including but not limited to legal claims and liabilities and 
litigation costs and any indemnification related thereto); and all other 
charges and costs of the Fund's operation unless otherwise explicitly 
provided herein.
 
     6.  For the services to be rendered, the facilities furnished, and the
expenses assumed by the Investment Manager, the Fund shall pay to the
Investment Manager monthly compensation determined by applying the following
annual rates to the Fund's daily net assets: 0.625% of the portion of the daily
net assets not exceeding $250 million; and 0.50% of the portion of the daily net
assets exceeding $250 million. Except as hereinafter set forth, compensation
under this Agreement shall be calculated and accrued daily and the amounts of
the daily accruals shall be paid monthly. Such calculations shall be made by
applying 1/365ths of the annual rates to the Fund's net assets each day
determined as of the close of business on that day or the last previous business
day. If this Agreement becomes effective subsequent to the first day of a month
or shall terminate before the last day of a month, compensation for that part of
the month this Agreement is in effect shall be prorated in a manner consistent
with the calculation of the fees as set forth above.
 
    Subject to the provisions of paragraph 7 hereof, payment of the Investment
Manager's compensation for the preceding month shall be made as promptly as
possible after completion of the computations contemplated by paragraph 7
hereof.
 
     7.  In the event the operating expenses of the Fund, including amounts
payable to the Investment Manager pursuant to paragraph 6 hereof, for any
fiscal year ending on a date on which this Agreement is in effect, exceed the
expense limitations applicable to the Fund imposed by state securities laws or
regulations thereunder, as such limitations may be raised or lowered from time
to time, the Investment Manager shall reduce its management fee to the extent of
such excess and, if required, pursuant to any such laws or regulations, will
reimburse the Fund for annual operating expenses in excess of any expense
limitation that may be applicable; provided, however, there shall be excluded
from such expenses the amount of any interest, taxes, brokerage commissions,
distribution fees and extraordinary expenses (including but not limited to legal
claims and liabilities and litigation costs and any indemnification related
thereto) paid or payable by the Fund. Such reduction, if any, shall be computed
and accrued daily, shall be settled on a
 
                                       2
<PAGE>

monthly basis, and shall be based upon the expense limitation applicable to the
Fund as at the end of the last business day of the month. Should two or more
such expense limitations be applicable as at the end of the last business day of
the month, that expense limitation which results in the largest reduction in the
Investment Manager's fee shall be applicable.
 
    For purposes of this provision, should any applicable expense limitation be
based upon the gross income of the Fund, such gross income shall include, but
not be limited to, interest on debt securities in the Fund's portfolio accrued
to and including the last day of the Fund's fiscal year, and dividends declared
on equity securities in the Fund's portfolio, the record dates for which fall on
or prior to the last day of such fiscal year, but shall not include gains from
the sale of securities.
 
     8.  The Investment Manager will use its best efforts in the supervision 
and management of the investment activities of the Fund, but in the absence 
of willful misfeasance, bad faith, gross negligence or reckless disregard of 
its obligations hereunder, the Investment Manager shall not be liable to the 
Fund or any of its investors for any error of judgment or mistake of law or 
for any act or omission by the Investment Manager or for any losses sustained 
by the Fund or its investors.
 
     9.  Nothing contained in this Agreement shall prevent the Investment 
Manager or any affiliated person of the Investment Manager from acting as 
investment adviser or manager for any other person, firm or corporation and 
shall not in any way bind or restrict the Investment Manager or any such 
affiliated person from buying, selling or trading any securities or 
commodities for their own accounts or for the account of others for whom they 
may be acting. Nothing in this Agreement shall limit or restrict the right of 
any Director, officer or employee of the Investment Manager to engage in any 
other business or to devote his or her time and attention in part to the 
management or other aspects of any other business whether of a similar or 
dissimilar nature.
 
    10.  This Agreement shall remain in effect until April 30, 1999 and from 
year to year thereafter provided such continuance is approved at least 
annually by the vote of holders of a majority, as defined in the Investment 
Company Act (the "Act"), of the outstanding voting securities of the Fund or 
by the Directors of the Fund; provided that in either event such continuance 
is also approved annually by the vote of a majority of the Directors of the 
Fund who are not parties to this Agreement or "interested persons" (as 
defined in the Act) of any such party, which vote must be cast in person at a 
meeting called for the purpose of voting on such approval; provided, however, 
that (a) the Fund may, at any time and without the payment of any penalty, 
terminate this Agreement upon thirty days' written notice to the Investment 
Manager, either by majority vote of the Directors of the Fund or by the vote 
of a majority of the outstanding voting securities of the Fund; (b) this 
Agreement shall immediately terminate in the event of its assignment (to the 
extent required by the Act and the rules thereunder) unless such automatic 
terminations shall be prevented by an exemptive order of the Securities and 
Exchange Commission; and (c) the Investment Manager may terminate this 
Agreement without payment of penalty on thirty days' written notice to the 
Fund. Any notice under this Agreement shall be given in writing, addressed 
and delivered, or mailed post-paid, to the other party at the principal 
office of such party. 

    11.  This Agreement may be amended by the parties without the vote or 
consent of the shareholders of the Fund to supply any omission, to cure, 
correct or supplement any ambiguous, defective or inconsistent provision 
hereof, or if they deem it necessary to conform this Agreement to the 
requirements of applicable federal laws or regulations, but neither the Fund 
nor the Investment Manager shall be liable for failing to do so.
 
    12.  This Agreement shall be construed in accordance with the laws of the
State of New York and the applicable provisions of the Act. To the extent
the applicable law of the State of New York, or any of the provisions herein,
conflicts with the applicable provisions of the Act, the latter shall control.
 
    13.  The Investment Manager and the Fund each agree that the name "Dean
Witter," which comprises a component of the Fund's name, is a property
right of Dean Witter Reynolds Inc. The Fund agrees and consents that (i) it will
only use the name "Dean Witter" as a component of its name and for no other
purpose, (ii) it will not purport to grant to any third party the right to use
the name "Dean Witter" for any
 
                                       3
<PAGE>

purpose, (iii) the Investment Manager or its parent, Morgan Stanley, Dean
Witter, Discover & Co., or any corporate affiliate of the Investment Manager's
parent, may use or grant to others the right to use the name "Dean Witter," or
any combination or abbreviation thereof, as all or a portion of a corporate or
business name or for any commercial purpose, including a grant of such right to
any other investment company, (iv) at the request of the Investment Manager or
its parent, the Fund will take such action as may be required to provide its
consent to the use of the name "Dean Witter," or any combination or abbreviation
thereof, by the Investment Manager or its parent or any corporate affiliate of
the Investment Manager's parent, or by any person to whom the Investment Manager
or its parent or any corporate affiliate of the Investment Manager's parent
shall have granted the right to such use, and (v) upon the termination of any
investment advisory agreement into which the Investment Manager and the Fund may
enter, or upon termination of affiliation of the Investment Manager with its
parent, the Fund shall, upon request by the Investment Manager or its parent,
cease to use the name "Dean Witter" as a component of its name, and shall not
use the name, or any combination or abbreviation thereof, as a part of its name
or for any other commercial purpose, and shall cause its officers, Directors and
shareholders to take any and all actions which the Investment Manager or its
parent may request to effect the foregoing and to reconvey to the Investment
Manager or its parent any and all rights to such name.
 
    IN WITNESS WHEREOF, the parties hereto have executed and delivered this
Agreement on the day and year first above written in New York, New York.
 

                                       DEAN WITTER NATURAL RESOURCE
                                       DEVELOPMENT SECURITIES INC.
 
Attest:                                By  
 ...............................          ......................................
 
 
                                       DEAN WITTER INTERCAPITAL INC.
 
Attest:                               By  
 ...............................         ......................................
 


                                       4

<PAGE>

                                                                                
                               DEAN WITTER FUNDS
                             DISTRIBUTION AGREEMENT
 
    AGREEMENT made as of this 31st day of May, 1997 between each of the open-end
investment  companies to which Dean Witter  InterCapital Inc. acts as investment
manager, that are  listed on Schedule  A, as may  be amended from  time to  time
(each,  a "Fund"  and collectively, the  "Funds"), and  Dean Witter Distributors
Inc., a Delaware corporation (the "Distributor").
 
                              W I T N E S S E T H:
 
    WHEREAS, each Fund is registered as an open-end investment company under the
Investment Company Act of 1940,  as amended (the "1940 Act"),  and it is in  the
interest of each Fund to offer its shares for sale continuously, and
 
    WHEREAS,  each Fund and the Distributor wish to enter into an agreement with
each other with respect to the  continuous offering of each Fund's  transferable
shares, of $0.01 par value (the "Shares"), to commence on the date listed above,
in  order to promote the growth of  each Fund and facilitate the distribution of
its shares.
 
    NOW, THEREFORE, the parties agree as follows:
 
    SECTION 1.  APPOINTMENT OF THE DISTRIBUTOR.
 
    (a) Each Fund hereby appoints  the Distributor as the principal  underwriter
and  distributor of the Fund to sell Shares to the public on the terms set forth
in this Agreement and that Fund's prospectus and the Distributor hereby  accepts
such appointment and agrees to act hereunder. Each Fund, during the term of this
Agreement,  shall sell Shares  to the Distributor upon  the terms and conditions
set forth herein.
 
    (b) The Distributor  agrees to  purchase Shares,  as principal  for its  own
account,  from  each Fund  and to  sell  Shares as  principal to  investors, and
securities dealers, including Dean Witter Reynolds Inc. ("DWR"), an affiliate of
the Distributor, upon the terms described  herein and in that Fund's  prospectus
(the  "Prospectus")  and statement  of  additional information  included  in the
Fund's registration statement (the "Registration Statement") most recently filed
from time to time  with the Securities and  Exchange Commission (the "SEC")  and
effective under the Securities Act of 1933, as amended (the "1933 Act"), and the
1940 Act or as the Prospectus may be otherwise amended or supplemented and filed
with the SEC pursuant to Rule 497 under the 1933 Act.
 
    SECTION  2.   EXCLUSIVE  NATURE OF  DUTIES.   The  Distributor shall  be the
exclusive principal underwriter and  distributor of each  Fund, except that  the
exclusive  rights granted to the Distributor to  sell the Shares shall not apply
to  Shares  issued  by  each  Fund:  (i)  in  connection  with  the  merger   or
consolidation  of any other investment company  or personal holding company with
the Fund or the  acquisition by purchase or  otherwise of all (or  substantially
all)  the assets or the outstanding shares of any such company by the Fund; (ii)
pursuant to reinvestment of dividends  or capital gains distributions; or  (iii)
pursuant to the reinstatement privilege afforded redeeming shareholders.
 
    SECTION 3.  PURCHASE OF SHARES FROM EACH FUND.
 
    (a)  The Distributor shall have  the right to buy  from each Fund the Shares
needed, but  not more  than the  Shares needed  (except for  clerical errors  in
transmission),   to  fill  unconditional  orders  for  Shares  placed  with  the
Distributor by investors or securities dealers. The price which the  Distributor
shall  pay for  the Shares  so purchased from  the Fund  shall be  the net asset
value, determined as set forth in the Prospectus, used in determining the public
offering price on which such orders were based.
 
    (b) The Shares are to  be resold by the  Distributor at the public  offering
price  of Shares as set  forth in the Prospectus,  to investors or to securities
dealers, including DWR, who  have entered into  selected dealer agreements  with
the  Distributor upon  the terms  and conditions set  forth in  Section 7 hereof
("Selected Dealers").
 
                                       1
<PAGE>
    (c) Each Fund  shall have the  right to suspend  the sale of  the Shares  at
times  when  redemption is  suspended pursuant  to the  conditions set  forth in
Section (f) hereof. Each Fund shall also  have the right to suspend the sale  of
the  Shares if trading on the New York Stock Exchange shall have been suspended,
if a  banking  moratorium  shall have  been  declared  by federal  or  New  York
authorities,  or if there shall have  been some other extraordinary event which,
in the judgment of a Fund, makes it impracticable to sell its Shares.
 
    (d) Each Fund, or  any agent of  a Fund designated in  writing by the  Fund,
shall  be promptly  advised of  all purchase orders  for Shares  received by the
Distributor. Any order may be rejected by a Fund; provided, however, that a Fund
will not arbitrarily or without reasonable cause refuse to accept orders for the
purchase of Shares. The Distributor will confirm orders upon their receipt,  and
each  Fund (or its agent) upon receipt of payment therefor and instructions will
deliver share  certificates  for  such  Shares or  a  statement  confirming  the
issuance of Shares. Payment shall be made to the Fund in New York Clearing House
funds.  The Distributor agrees to cause such payment and such instructions to be
delivered promptly to the Fund (or its agent).
 
    (e) With respect to Shares sold  by any Selected Dealer, the Distributor  is
authorized to direct each Fund's transfer agent to receive instructions directly
from  the Selected  Dealer on  behalf of the  Distributor as  to registration of
Shares in the names of investors and  to confirm issuance of the Shares to  such
investors.  The Distributor is also authorized to instruct the transfer agent to
receive payment directly from the Selected Dealer on behalf of the  Distributor,
for  prompt transmittal to each  Fund's custodian, of the  purchase price of the
Shares. In such event the Distributor shall obtain from the Selected Dealer  and
maintain a record of such registration instructions and payments.
 
    SECTION 4.  REPURCHASE OR REDEMPTION OF SHARES.
 
    (a)  Any of the outstanding Shares of  a Fund may be tendered for redemption
at any time, and each Fund agrees to redeem its Shares so tendered in accordance
with the applicable provisions set forth in its Prospectus. The price to be paid
to redeem the Shares  shall be equal  to the net asset  value determined as  set
forth  in the Prospectus  less, in the case  of a Fund  whose Shares are offered
with a contingent deferred sales charge ("CDSC"), any applicable CDSC. Upon  any
redemption of Shares the Fund shall pay the total amount of the redemption price
in New York Clearing House funds in accordance with applicable provisions of the
Prospectus.
 
    (b)  In the case of  a Fund whose Shares are  offered with a front-end sales
charge, the redemption by a  Fund of any of its  Shares purchased by or  through
the Distributor will not affect the applicable front-end sales charge secured by
the  Distributor or  any Selected  Dealer in  the course  of the  original sale,
except that if any Shares are tendered for redemption within seven business days
after the date of the  confirmation of the original  purchase, the right to  the
applicable  front-end sales charge shall be forfeited by the Distributor and the
Selected Dealer which sold such Shares.
 
    (c) In the case of a Fund whose Shares are offered with a CDSC, the proceeds
of any redemption  of Shares  shall be  paid by each  Fund as  follows: (i)  any
applicable  CDSC shall be paid to the Distributor or to the Selected Dealer, or,
when applicable,  pursuant to  the  Rules of  the  Association of  the  National
Association  of Securities Dealers, Inc. ("NASD"), retained by the Fund and (ii)
the balance  shall  be paid  to  the redeeming  shareholders,  in each  case  in
accordance  with applicable  provisions of its  Prospectus in  New York Clearing
House funds. The Distributor is authorized to  direct a Fund to pay directly  to
the  Selected Dealer any CDSC payable by a Fund to the Distributor in respect of
Shares sold by the Selected Dealer to the redeeming shareholders.
 
    (d) The Distributor  is authorized,  as agent  for the  Fund, to  repurchase
Shares,  represented by a share certificate which  is delivered to any office of
the Distributor  in accordance  with  applicable provisions  set forth  in  each
Fund's Prospectus. The Distributor shall promptly transmit to the transfer agent
of  the Fund for  redemption all Shares  so delivered. The  Distributor shall be
responsible for the accuracy of instructions transmitted to the Fund's  transfer
agent in connection with all such repurchases.
 
    (e)  The Distributor  is authorized, as  agent for each  Fund, to repurchase
Shares held  in  a  shareholder's  account  with  a  Fund  for  which  no  share
certificate   has   been   issued,   upon   the   telephonic   request   of  the
 
                                       2
<PAGE>
shareholders, or at  the discretion  of the Distributor.  The Distributor  shall
promptly  transmit to the transfer  agent of the Fund,  for redemption, all such
orders for repurchase of Shares. Payment for Shares repurchased may be made by a
Fund to the  Distributor for  the account  of the  shareholder. The  Distributor
shall  be responsible for the accuracy of instructions transmitted to the Fund's
transfer agent in connection with all such repurchases.
 
    (f) Redemption of its Shares or payment by a Fund may be suspended at  times
when  the New York  Stock Exchange is  closed, when trading  on said Exchange is
restricted, when an emergency exists as a result of which disposal by a Fund  of
securities  owned by it  is not reasonably  practicable or it  is not reasonably
practicable for a  Fund fairly  to determine  the value  of its  net assets,  or
during any other period when the SEC, by order, so permits.
 
    (g)  With respect to its Shares tendered for redemption or repurchase by any
Selected Dealer on  behalf of its  customers, the Distributor  is authorized  to
instruct  the  transfer agent  of  a Fund  to  accept orders  for  redemption or
repurchase directly from the Selected Dealer on behalf of the Distributor and to
instruct the  Fund to  transmit payments  for such  redemptions and  repurchases
directly  to the Selected Dealer on behalf of the Distributor for the account of
the shareholder.  The Distributor  shall obtain  from the  Selected Dealer,  and
shall  maintain, a record of such  orders. The Distributor is further authorized
to obtain from the Fund, and shall  maintain, a record of payment made  directly
to the Selected Dealer on behalf of the Distributor.
 
    SECTION 5.  DUTIES OF THE FUND.
 
    (a)  Each Fund shall  furnish to the Distributor  copies of all information,
financial statements  and  other papers  which  the Distributor  may  reasonably
request for use in connection with the distribution of its Shares, including one
certified  copy, upon  request by the  Distributor, of  all financial statements
prepared by the Fund and examined  by independent accountants. Each Fund  shall,
at the expense of the Distributor, make available to the Distributor such number
of copies of its Prospectus as the Distributor shall reasonably request.
 
    (b)  Each Fund shall take,  from time to time,  but subject to the necessary
approval of its  shareholders, all  necessary action to  fix the  number of  its
authorized  Shares and to  register Shares under  the 1933 Act,  to the end that
there will  be  available  for sale  such  number  of Shares  as  investors  may
reasonably be expected to purchase.
 
    (c)  Each Fund  shall use  its best efforts  to pay  the filing  fees for an
appropriate number of its Shares  to be sold under  the securities laws of  such
states  as the Distributor and  the Fund may approve.  Any qualification to sell
its Shares in a state may be withheld, terminated or withdrawn by a Fund at  any
time  in its discretion.  As provided in  Section 8(c) hereof,  such filing fees
shall be paid  by the Fund.  The Distributor shall  furnish any information  and
other  material relating to its  affairs and activities as  may be required by a
Fund in connection with the sale of its Shares in any state.
 
    (d) Each  Fund  shall,  at  the expense  of  the  Distributor,  furnish,  in
reasonable  quantities upon request by the Distributor, copies of its annual and
interim reports.
 
    SECTION 6.  DUTIES OF THE DISTRIBUTOR.
 
    (a) The Distributor shall sell shares of each Fund through DWR and may  sell
shares  through other  securities dealers  and its  own Account  Executives, and
shall devote reasonable  time and  effort to promote  sales of  the Shares,  but
shall  not be obligated to  sell any specific number  of Shares. The services of
the Distributor  hereunder are  not  exclusive and  it  is understood  that  the
Distributor  may act  as principal  underwriter for  other registered investment
companies, so  long as  the  performance of  its  obligations hereunder  is  not
impaired  thereby. It is  also understood that  Selected Dealers, including DWR,
may also sell shares for other registered investment companies.
 
    (b)  Neither  the  Distributor  nor  any  Selected  Dealer  shall  give  any
information  or  make any  representations, other  than  those contained  in the
Registration  Statement  or   related  Prospectus  and   any  sales   literature
specifically approved by the appropriate Fund.
 
                                       3
<PAGE>
    (c)  The  Distributor agrees  that  it will  at  all times  comply  with the
applicable terms and limitations of the Rules of the Association of the NASD.
 
    SECTION 7.  SELECTED DEALERS AGREEMENTS.
 
    (a) The  Distributor shall  have the  right to  enter into  selected  dealer
agreements  with Selected Dealers  for the sale of  Shares. In making agreements
with Selected Dealers, the  Distributor shall act only  as principal and not  as
agent  for a Fund. Shares  sold to Selected Dealers shall  be for resale by such
dealers only at  the public  offering price set  forth in  the Prospectus.  With
respect to Funds whose Shares are offered with a front-end sales charge, in such
agreement  the  Distributor shall  have  the right  to  fix the  portion  of the
applicable front-end  sales  charge  which  may be  allocated  to  the  Selected
Dealers.
 
    (b)  Within the United  States, the Distributor shall  offer and sell Shares
only to Selected Dealers that are members in good standing of the NASD.
 
    (c) The Distributor shall adopt and  follow procedures, as approved by  each
Fund,  for the  confirmation of  sales of its  Shares to  investors and Selected
Dealers, the collection of amounts payable by investors and Selected Dealers  on
such  sales, and the cancellation of unsettled transactions, as may be necessary
to comply with the requirements of the NASD, as such requirements may from  time
to time exist.
 
    SECTION 8.  PAYMENT OF EXPENSES.
 
    (a)  Each Fund shall bear all costs and expenses of the Fund, including fees
and disbursements of legal counsel  including counsel to the  Directors/Trustees
of  each Fund who are not interested persons (as defined in the 1940 Act) of the
Fund or the  Distributor, and  independent accountants, in  connection with  the
preparation  and filing of any required Registration Statements and Prospectuses
and all  amendments  and supplements  thereto,  and the  expense  of  preparing,
printing,  mailing  and otherwise  distributing  prospectuses and  statements of
additional  information,  annual  or  interim  reports  or  proxy  materials  to
shareholders.
 
    (b)  The Distributor  shall bear all  expenses incurred by  it in connection
with its duties  and activities under  this Agreement including  the payment  to
Selected  Dealers of any sales commissions,  service fees and other expenses for
sales of a Fund's  Shares (except such expenses  as are specifically  undertaken
herein  by a  Fund) incurred  or paid  by Selected  Dealers, including  DWR. The
Distributor shall  bear  the  costs  and expenses  of  preparing,  printing  and
distributing  any  supplementary sales  literature  used by  the  Distributor or
furnished by it for use by Selected  Dealers in connection with the offering  of
the  Shares for  sale. Any expenses  of advertising incurred  in connection with
such offering will also be the  obligation of the Distributor. It is  understood
and agreed that, so long as a Fund's Plan of Distribution pursuant to Rule 12b-1
under  the  1940  Act ("Rule  12b-1  Plan")  continues in  effect,  any expenses
incurred by the Distributor hereunder may  be paid in accordance with the  terms
of such Rule 12b-1 Plan.
 
    (c)  Each Fund shall pay the filing  fees, and, if necessary or advisable in
connection therewith, bear  the cost and  expense of qualifying  each Fund as  a
broker  or dealer, in such states of the United States or other jurisdictions as
shall be  selected by  the Fund  and the  Distributor pursuant  to Section  5(c)
hereof  and the cost and  expenses payable to each  such state for continuing to
offer Shares  therein  until the  Fund  decides to  discontinue  selling  Shares
pursuant to Section 5(c) hereof.
 
    SECTION 9.  INDEMNIFICATION.
 
    (a)  Each Fund  shall indemnify and  hold harmless the  Distributor and each
person, if any, who controls the Distributor against any loss, liability, claim,
damage or expense (including the  reasonable cost of investigating or  defending
any  alleged loss,  liability, claim, damage  or expense  and reasonable counsel
fees incurred in connection therewith) arising by reason of any person acquiring
any Shares, which may be based upon the 1933 Act, or on any other statute or  at
common  law, on the ground that the Registration Statement or related Prospectus
and Statement  of Additional  Information,  as from  time  to time  amended  and
supplemented,  or  the annual  or  interim reports  to  shareholders of  a Fund,
includes an untrue statement  of a material  fact or omits  to state a  material
fact  required to be stated therein or necessary in order to make the statements
therein not misleading, unless such statement  or omission was made in  reliance
upon, and in
 
                                       4
<PAGE>
conformity with, information furnished to the Fund in connection therewith by or
on  behalf of  the Distributor; provided,  however, that  in no case  (i) is the
indemnity of a Fund in favor of the Distributor and any such controlling persons
to be deemed to protect the Distributor or any such controlling persons  thereof
against any liability to a Fund or its security holders to which the Distributor
or  any such controlling persons would otherwise be subject by reason of willful
misfeasance, bad faith or gross negligence  in the performance of its duties  or
by  reason  of  reckless disregard  of  its  obligations and  duties  under this
Agreement; or  (ii)  is  a Fund  to  be  liable under  its  indemnity  agreement
contained  in  this  paragraph  with  respect  to  any  claim  made  against the
Distributor or any such controlling persons, unless the Distributor or any  such
controlling persons, as the case may be, shall have notified the Fund in writing
within  a reasonable time after the summons  or other first legal process giving
information of  the  nature  of  the  claim shall  have  been  served  upon  the
Distributor  or  uch  controlling  persons (or  after  the  Distributor  or such
controlling persons shall have received notice of such service on any designated
agent), but failure to notify  the Fund of any such  claim shall not relieve  it
from  any liability which it may have to  the person against whom such action is
brought otherwise than on account of  its indemnity agreement contained in  this
paragraph.  Each Fund will be entitled to  participate at its own expense in the
defense, or, if it so elects, to assume the defense, of any such suit brought to
enforce any such liability,  but if a  Fund elects to  assume the defense,  such
defense  shall be  conducted by  counsel chosen  by it  and satisfactory  to the
Distributor or such controlling  person or persons,  defendant or defendants  in
the  suit. In the event the  Fund elects to assume the  defense of any such suit
and retain such counsel, the Distributor or such controlling person or  persons,
defendant  or defendants in  the suit, shall  bear the fees  and expenses of any
additional counsel retained by  them, but, in  case the Fund  does not elect  to
assume  the defense of any such suit,  it will reimburse the Distributor or such
controlling person or  persons, defendant  or defendants  in the  suit, for  the
reasonable  fees and expenses of  any counsel retained by  them. Each Fund shall
promptly notify  the  Distributor  of  the commencement  of  any  litigation  or
proceedings  against  it  or  any  of  its  officers  or  Directors/Trustees  in
connection with the issuance or sale of the Shares.
 
    (b)  (i)  The Distributor shall  indemnify and hold  harmless each Fund  and
each  of  its Directors/  Trustees and  officers  and each  person, if  any, who
controls the  Fund  against  any  loss, liability,  claim,  damage,  or  expense
described in the indemnity contained in subsection (a) of this Section, but only
with respect to statements or omissions made in reliance upon, and in conformity
with,  information  furnished  to a  Fund  in writing  by  or on  behalf  of the
Distributor for use  in connection  with the Registration  Statement or  related
Prospectus  and  Statement  of  Additional Information,  as  from  time  to time
amended, or the annual or interim reports to shareholders.
 
        (ii) The Distributor  shall indemnify  and hold harmless  each Fund  and
each  Fund's  transfer agent,  individually and  in its  capacity as  the Fund's
transfer agent, from and against any claims, damages and liabilities which arise
as a result of actions taken pursuant to instructions from, or on behalf of, the
Distributor to: (1) redeem  all or a  part of shareholder  accounts in the  Fund
pursuant  to Section 4(g) hereof and pay the proceeds to, or as directed by, the
Distributor for the account  of each shareholder whose  Shares are so  redeemed;
and  (2) register Shares in the names of investors, confirm the issuance thereof
and receive payment therefor pursuant to Section 3(e) hereof.
 
       (iii) In case any action shall be brought against a Fund or any person so
indemnified by this  Section 9(b) in  respect of which  indemnity may be  sought
against  the Distributor, the Distributor shall have the rights and duties given
to a Fund, and the Fund and each person so indemnified shall have the rights and
duties given to  the Distributor, by  the provisions of  subsection (a) of  this
Section 9.
 
    (c)  If the indemnification provided for in this Section 9 is unavailable or
insufficient to hold harmless an indemnified  party under subsection (a) or  (b)
above  in respect  of any losses,  claims, damages, liabilities  or expenses (or
actions in respect thereof)  referred to herein,  then each indemnifiying  party
shall  contribute to the amount  paid or payable by  such indemnified party as a
result of such losses, claims, damages,  liabilities or expenses (or actions  in
respect  thereof) in such  proportion as is appropriate  to reflect the relative
benefits received by a  Fund on the  one hand and the  Distributor on the  other
from  the offering of  the Shares. If,  however, the allocation  provided by the
immediately preceding sentence  is not  permitted by applicable  law, then  each
indemnifying  party  shall contribute  to such  amount paid  or payable  by such
indemnified party in
 
                                       5
<PAGE>
such proportion as is appropriate to reflect not only such relative benefits but
also the relative fault  of a Fund on  the one hand and  the Distributor on  the
other  in connection  with the  statements or  omissions which  resulted in such
losses,  claims,  damages,  liabilities  or  expenses  (or  actions  in  respect
thereof),  as well as any other  relevant equitable considerations. The relative
benefits received by a  Fund on the  one hand and the  Distributor on the  other
shall  be deemed to be in the same proportion as the total net proceeds from the
offering (before deducting  expenses) received  by the  Fund bear  to the  total
compensation  received by  the Distributor,  in each  case as  set forth  in the
Prospectus. The relative fault shall be determined by reference to, among  other
things, whether the untrue or alleged untrue statement of a material fact or the
omission  or alleged  omission to state  a material fact  relates to information
supplied by  a  Fund  or  the Distributor  and  the  parties'  relative  intent,
knowledge,  access to  information and  opportunity to  correct or  prevent such
statement or omission. Each Fund and the Distributor agree that it would not  be
just  and equitable if contribution were determined by pro rata allocation or by
any other method of  allocation which does not  take into account the  equitable
considerations  referred to above. The amount  paid or payable by an indemnified
party as a result  of the losses, claims,  damages, liabilities or expenses  (or
actions  in respect thereof)  referred to above  shall be deemed  to include any
legal or  other  expenses  reasonably  incurred by  such  indemnified  party  in
connection  with investigating or defending  any such claim. Notwithstanding the
provisions of this  subsection (c),  the Distributor  shall not  be required  to
contribute  any amount in excess of the amount by which the total price at which
the Shares distributed by it  to the public were  offered to the public  exceeds
the  amount of any damages which it has otherwise been required to pay by reason
of such untrue or alleged untrue  statement or omission or alleged omission.  No
person  guilty of  fraudulent misrepresentation  (within the  meaning of Section
11(f) of the 1933 Act) shall be entitled to contribution from any person who was
not guilty of such fraudulent misrepresentation.
 
    SECTION 10.   DURATION AND TERMINATION  OF THIS AGREEMENT.   This  Agreement
shall become effective with respect to a Fund as of the date first above written
and shall remain in force until April 30, 1998, and thereafter, but only so long
as  such continuance is specifically approved at least annually by (i) the Board
of Directors/Trustees  of  each Fund,  or  by the  vote  of a  majority  of  the
outstanding  voting securities of the Fund, cast in person or by proxy, and (ii)
a majority of those Directors/Trustees who are not parties to this Agreement  or
interested  persons  of  any such  party  and  who have  no  direct  or indirect
financial interest in  this Agreement  or in the  operation of  the Fund's  Rule
12b-1  Plan or  in any agreement  related thereto,  cast in person  at a meeting
called for the purpose of voting upon such approval.
 
    This Agreement may  be terminated  at any time  without the  payment of  any
penalty,   by  the  Directors/  Trustees  of  a  Fund,  by  a  majority  of  the
Directors/Trustees of a Fund who are not interested persons of the Fund and  who
have no direct or indirect financial interest in this Agreement, or by vote of a
majority  of the outstanding voting securities of a Fund, or by the Distributor,
on sixty  days'  written  notice  to  the  other  party.  This  Agreement  shall
automatically terminate in the event of its assignment.
 
    The  terms  "vote  of  a majority  of  the  outstanding  voting securities,"
"assignment" and "interested person,"  when used in  this Agreement, shall  have
the respective meanings specified in the 1940 Act.
 
    SECTION 11.  AMENDMENTS OF THIS AGREEMENT.  This Agreement may be amended by
the  parties  only  if  such  amendment  is  specifically  approved  by  (i) the
Directors/Trustees of a Fund, or by the vote of a majority of outstanding voting
securities of a Fund, and (ii) a majority of those Directors/Trustees of a  Fund
who  are not parties to  this Agreement or interested  persons of any such party
and who have no direct  or indirect financial interest  in this Agreement or  in
any Agreement related to the Fund's Rule 12b-1 Plan, cast in person at a meeting
called for the purpose of voting on such approval.
 
    SECTION  12.   ADDITIONAL FUNDS.   If  at any  time another  Fund desires to
appoint the Distributor as its principal underwriter and distributor under  this
Agreement,  it shall  notify the Distributor  in writing. If  the Distributor is
willing to serve as the Fund's principal underwriter and distributor under  this
Agreement,  it shall notify the Fund in writing, whereupon such other Fund shall
become a Fund hereunder.
 
                                       6
<PAGE>
    SECTION 13.  GOVERNING LAW.  This Agreement shall be construed in accordance
with the law of the State of New York and the applicable provisions of the  1940
Act.  To the extent the applicable  law of the State of  New York, or any of the
provisions herein, conflicts with the applicable provisions of the 1940 Act, the
latter shall control.
 
    SECTION 14.  PERSONAL LIABILITY.  With respect to any Fund that is organized
as an  unincorporated business  trust  under the  laws  of the  Commonwealth  of
Massachusetts,  its Declaration of the Trust  (each, a "Declaration") is on file
in the  office of  the  Secretary of  the  Commonwealth of  Massachusetts.  Each
Declaration  provides that the name of the Fund refers to the Trustees under the
Declaration collectively as Trustees, but not as individuals or personally;  and
no Trustee, shareholder, officer, employee or agent of any Fund shall be held to
any  personal liability, nor shall  resort be had to  their private property for
the satisfaction of any obligation or claim or otherwise, in connection with the
affairs of any Fund, but the Trust Estate only shall be liable.
 
    IN WITNESS  WHEREOF, the  parties hereto  have executed  and delivered  this
Agreement as of the day and year first written in New York, New York.
 
                                          ON BEHALF OF THE FUNDS SET FORTH ON
                                          SCHEDULE A, ATTACHED HERETO
 
                                          By: ..................................
 
                                          DEAN WITTER DISTRIBUTORS INC.
 
                                          By: ..................................
 
                                       7
<PAGE>
                               DEAN WITTER FUNDS
                             DISTRIBUTION AGREEMENT
                                   SCHEDULE A
                                AT MAY 31, 1997
 
1)         Dean Witter American Value Fund
2)         Dean Witter Balanced Growth Fund
3)         Dean Witter Balanced Income Fund
4)         Dean Witter California Tax-Free Income Fund
5)         Dean Witter Capital Appreciation Fund
6)         Dean Witter Capital Growth Securities
7)         Dean Witter Convertible Securities Trust
8)         Dean Witter Developing Growth Securities Trust
9)         Dean Witter Diversified Income Trust
10)        Dean Witter Dividend Growth Securities Inc.
11)        Dean Witter European Growth Fund Inc.
12)        Dean Witter Federal Securities Trust
13)        Dean Witter Financial Services Trust
14)        Dean Witter Global Asset Allocation Fund
15)        Dean Witter Global Dividend Growth Securities
16)        Dean Witter Global Utilities Fund
17)        Dean Witter Health Sciences Trust
18)        Dean Witter High Yield Securities Inc.
19)        Dean Witter Income Builder Fund
20)        Dean Witter Information Fund
21)        Dean Witter Intermediate Income Securities
22)        Dean Witter International SmallCap Fund
23)        Dean Witter Japan Fund
24)        Dean Witter Managers' Select Fund
25)        Dean Witter Market Leader Trust
26)        Dean Witter Mid-Cap Growth Fund
27)        Dean Witter Natural Resource Development Securities Inc.
28)        Dean Witter New York Tax-Free Income Fund
29)        Dean Witter Pacific Growth Fund Inc.
30)        Dean Witter Precious Metals and Minerals Trust
31)        Dean Witter Special Value Fund
32)        Dean Witter Strategist Fund
33)        Dean Witter Tax-Exempt Securities Trust
34)        Dean Witter U.S. Government Securities Trust
35)        Dean Witter Utilities Fund
36)        Dean Witter Value-Added Market Series/Equity Portfolio
37)        Dean Witter World Wide Income Trust
38)        Dean Witter World Wide Investment Trust

 
                                       8

<PAGE>
                               DEAN WITTER FUNDS
                             DISTRIBUTION AGREEMENT               
 
    AGREEMENT made as of this 28th day of July, 1997 between each of the
open-end investment companies to which Dean Witter InterCapital Inc. acts as
investment manager, that are listed on Schedule A, as may be amended from time
to time (each, a "Fund" and collectively, the "Funds"), and Dean Witter
Distributors Inc., a Delaware corporation (the "Distributor").
 
                              W I T N E S S E T H:
 
    WHEREAS, each Fund is registered as an open-end investment company under the
Investment Company Act of 1940, as amended (the "1940 Act"), and it is in the
interest of each Fund to offer its shares for sale continuously, and
 
    WHEREAS, each Fund and the Distributor wish to enter into an agreement with
each other with respect to the continuous offering of each Fund's transferable
shares, of $0.01 par value (the "Shares"), to commence on the date listed above,
in order to promote the growth of each Fund and facilitate the distribution of
its shares.
 
    NOW, THEREFORE, the parties agree as follows:
 
    SECTION 1.  APPOINTMENT OF THE DISTRIBUTOR.
 
    (a) Each Fund hereby appoints the Distributor as the principal underwriter
and distributor of the Fund to sell Shares to the public on the terms set forth
in this Agreement and that Fund's prospectus and the Distributor hereby accepts
such appointment and agrees to act hereunder. Each Fund, during the term of this
Agreement, shall sell Shares to the Distributor upon the terms and conditions
set forth herein.
 
    (b) The Distributor agrees to purchase Shares, as principal for its own
account, from each Fund and to sell Shares as principal to investors, and
securities dealers, including Dean Witter Reynolds Inc. ("DWR"), an affiliate of
the Distributor, upon the terms described herein and in that Fund's prospectus
(the "Prospectus") and statement of additional information included in the
Fund's registration statement (the "Registration Statement") most recently filed
from time to time with the Securities and Exchange Commission (the "SEC") and
effective under the Securities Act of 1933, as amended (the "1933 Act"), and the
1940 Act or as the Prospectus may be otherwise amended or supplemented and filed
with the SEC pursuant to Rule 497 under the 1933 Act.
 
    SECTION 2.  EXCLUSIVE NATURE OF DUTIES.  The Distributor shall be the
exclusive principal underwriter and distributor of each Fund, except that the
exclusive rights granted to the Distributor to sell the Shares shall not apply
to Shares issued by each Fund: (i) in connection with the merger or
consolidation of any other investment company or personal holding company with
the Fund or the acquisition by purchase or otherwise of all (or substantially
all) the assets or the outstanding shares of any such company by the Fund; (ii)
pursuant to reinvestment of dividends or capital gains distributions; or (iii)
pursuant to the reinstatement privilege afforded redeeming shareholders.
 
    SECTION 3.  PURCHASE OF SHARES FROM EACH FUND.  The Shares are offered in
four classes (each, a "Class"), as described in the Prospectus, as amended or
supplemented from time to time.
 
    (a) The Distributor shall have the right to buy from each Fund the Shares of
the particular class needed, but not more than the Shares needed (except for
clerical errors in transmission), to fill unconditional orders for Shares of the
applicable class placed with the Distributor by investors or securities dealers.
The price which the Distributor shall pay for the Shares so purchased from the
Fund shall be the net asset value, determined as set forth in the Prospectus,
used in determining the public offering price on which such orders were based.
 
    (b) The Shares are to be resold by the Distributor at the public offering
price of Shares of the applicable class as set forth in the Prospectus, to
investors or to securities dealers, including DWR, who
 
                                       1
<PAGE>
have entered into selected dealer agreements with the Distributor upon the terms
and conditions set forth in Section 7 hereof ("Selected Dealers").
 
    (c) Each Fund shall have the right to suspend the sale of the Shares at
times when redemption is suspended pursuant to the conditions set forth in
Section 4(f) hereof. Each Fund shall also have the right to suspend the sale of
the Shares if trading on the New York Stock Exchange shall have been suspended,
if a banking moratorium shall have been declared by federal or New York
authorities, or if there shall have been some other extraordinary event which,
in the judgment of a Fund, makes it impracticable to sell its Shares.
 
    (d) Each Fund, or any agent of a Fund designated in writing by the Fund,
shall be promptly advised of all purchase orders for Shares received by the
Distributor. Any order may be rejected by a Fund; provided, however, that a Fund
will not arbitrarily or without reasonable cause refuse to accept orders for the
purchase of Shares. The Distributor will confirm orders upon their receipt, and
each Fund (or its agent) upon receipt of payment therefor and instructions will
deliver share certificates for such Shares or a statement confirming the
issuance of Shares. Payment shall be made to the Fund in New York Clearing House
funds. The Distributor agrees to cause such payment and such instructions to be
delivered promptly to the Fund (or its agent).
 
    (e) With respect to Shares sold by any Selected Dealer, the Distributor is
authorized to direct each Fund's transfer agent to receive instructions directly
from the Selected Dealer on behalf of the Distributor as to registration of
Shares in the names of investors and to confirm issuance of the Shares to such
investors. The Distributor is also authorized to instruct the transfer agent to
receive payment directly from the Selected Dealer on behalf of the Distributor,
for prompt transmittal to each Fund's custodian, of the purchase price of the
Shares. In such event the Distributor shall obtain from the Selected Dealer and
maintain a record of such registration instructions and payments.
 
    SECTION 4.  REPURCHASE OR REDEMPTION OF SHARES.
 
    (a) Any of the outstanding Shares of a Fund may be tendered for redemption
at any time, and each Fund agrees to redeem its Shares so tendered in accordance
with the applicable provisions set forth in its Prospectus. The price to be paid
to redeem the Shares shall be equal to the net asset value determined as set
forth in the Prospectus less any applicable contingent deferred sales charge
("CDSC"). Upon any redemption of Shares the Fund shall pay the total amount of
the redemption price in New York Clearing House funds in accordance with
applicable provisions of the Prospectus.
 
    (b) The redemption by a Fund of any of its Class A Shares purchased by or
through the Distributor will not affect the applicable front-end sales charge
secured by the Distributor or any Selected Dealer in the course of the original
sale, except that if any Class A Shares are tendered for redemption within seven
business days after the date of the confirmation of the original purchase, the
right to the applicable front-end sales charge shall be forfeited by the
Distributor and the Selected Dealer which sold such Shares.
 
    (c) The proceeds of any redemption of Class A, Class B or Class C Shares
shall be paid by each Fund as follows: (i) any applicable CDSC shall be paid to
the Distributor or to the Selected Dealer, or, when applicable, pursuant to the
Rules of the Association of the National Association of Securities Dealers, Inc.
("NASD"), retained by the Fund and (ii) the balance shall be paid to the
redeeming shareholders, in each case in accordance with applicable provisions of
its Prospectus in New York Clearing House funds. The Distributor is authorized
to direct a Fund to pay directly to the Selected Dealer any CDSC payable by a
Fund to the Distributor in respect of Class A, Class B, or Class C Shares sold
by the Selected Dealer to the redeeming shareholders.
 
    (d) The Distributor is authorized, as agent for the Fund, to repurchase
Shares, represented by a share certificate which is delivered to any office of
the Distributor in accordance with applicable provisions set forth in each
Fund's Prospectus. The Distributor shall promptly transmit to the transfer agent
of the Fund for redemption all Shares so delivered. The Distributor shall be
responsible for the accuracy of instructions transmitted to the Fund's transfer
agent in connection with all such repurchases.
 
                                       2
<PAGE>
    (e) The Distributor is authorized, as agent for each Fund, to repurchase
Shares held in a shareholder's account with a Fund for which no share
certificate has been issued, upon the telephonic request of the shareholders, or
at the discretion of the Distributor. The Distributor shall promptly transmit to
the transfer agent of the Fund, for redemption, all such orders for repurchase
of Shares. Payment for Shares repurchased may be made by a Fund to the
Distributor for the account of the shareholder. The Distributor shall be
responsible for the accuracy of instructions transmitted to the Fund's transfer
agent in connection with all such repurchases.
 
    (f) Redemption of its Shares or payment by a Fund may be suspended at times
when the New York Stock Exchange is closed, when trading on said Exchange is
restricted, when an emergency exists as a result of which disposal by a Fund of
securities owned by it is not reasonably practicable or it is not reasonably
practicable for a Fund fairly to determine the value of its net assets, or
during any other period when the SEC, by order, so permits.
 
    (g) With respect to its Shares tendered for redemption or repurchase by any
Selected Dealer on behalf of its customers, the Distributor is authorized to
instruct the transfer agent of a Fund to accept orders for redemption or
repurchase directly from the Selected Dealer on behalf of the Distributor and to
instruct the Fund to transmit payments for such redemptions and repurchases
directly to the Selected Dealer on behalf of the Distributor for the account of
the shareholder. The Distributor shall obtain from the Selected Dealer, and
shall maintain, a record of such orders. The Distributor is further authorized
to obtain from the Fund, and shall maintain, a record of payment made directly
to the Selected Dealer on behalf of the Distributor.
 
    SECTION 5.  DUTIES OF THE FUND.
 
    (a) Each Fund shall furnish to the Distributor copies of all information,
financial statements and other papers which the Distributor may reasonably
request for use in connection with the distribution of its Shares, including one
certified copy, upon request by the Distributor, of all financial statements
prepared by the Fund and examined by independent accountants. Each Fund shall,
at the expense of the Distributor, make available to the Distributor such number
of copies of its Prospectus as the Distributor shall reasonably request.
 
    (b) Each Fund shall take, from time to time, but subject to the necessary
approval of its shareholders, all necessary action to fix the number of its
authorized Shares and to register Shares under the 1933 Act, to the end that
there will be available for sale such number of Shares as investors may
reasonably be expected to purchase.
 
    (c) Each Fund shall use its best efforts to pay the filing fees for an
appropriate number of its Shares to be sold under the securities laws of such
states as the Distributor and the Fund may approve. Any qualification to sell
its Shares in a state may be withheld, terminated or withdrawn by a Fund at any
time in its discretion. As provided in Section 8(c) hereof, such filing fees
shall be paid by the Fund. The Distributor shall furnish any information and
other material relating to its affairs and activities as may be required by a
Fund in connection with the sale of its Shares in any state.
 
    (d) Each Fund shall, at the expense of the Distributor, furnish, in
reasonable quantities upon request by the Distributor, copies of its annual and
interim reports.
 
    SECTION 6.  DUTIES OF THE DISTRIBUTOR.
 
    (a) The Distributor shall sell shares of each Fund through DWR and may sell
shares through other securities dealers and its own Account Executives, and
shall devote reasonable time and effort to promote sales of the Shares, but
shall not be obligated to sell any specific number of Shares. The services of
the Distributor hereunder are not exclusive and it is understood that the
Distributor may act as principal underwriter for other registered investment
companies, so long as the performance of its obligations hereunder is not
impaired thereby. It is also understood that Selected Dealers, including DWR,
may also sell shares for other registered investment companies.
 
                                       3
<PAGE>
    (b) Neither the Distributor nor any Selected Dealer shall give any
information or make any representations, other than those contained in the
Registration Statement or related Prospectus and any sales literature
specifically approved by the appropriate Fund.
 
    (c) The Distributor agrees that it will at all times comply with the
applicable terms and limitations of the Rules of the Association of the NASD.
 
    SECTION 7.  SELECTED DEALERS AGREEMENTS.
 
    (a) The Distributor shall have the right to enter into selected dealer
agreements with Selected Dealers for the sale of Shares. In making agreements
with Selected Dealers, the Distributor shall act only as principal and not as
agent for a Fund. Shares sold to Selected Dealers shall be for resale by such
dealers only at the public offering price set forth in the Prospectus. With
respect to Class A Shares, in such agreement the Distributor shall have the
right to fix the portion of the applicable front-end sales charge which may be
allocated to the Selected Dealers.
 
    (b) Within the United States, the Distributor shall offer and sell Shares
only to Selected Dealers that are members in good standing of the NASD.
 
    (c) The Distributor shall adopt and follow procedures, as approved by each
Fund, for the confirmation of sales of its Shares to investors and Selected
Dealers, the collection of amounts payable by investors and Selected Dealers on
such sales, and the cancellation of unsettled transactions, as may be necessary
to comply with the requirements of the NASD, as such requirements may from time
to time exist.
 
    SECTION 8.  PAYMENT OF EXPENSES.
 
    (a) Each Fund shall bear all costs and expenses of the Fund, including fees
and disbursements of legal counsel including counsel to the Directors/Trustees
of each Fund who are not interested persons (as defined in the 1940 Act) of the
Fund or the Distributor, and independent accountants, in connection with the
preparation and filing of any required Registration Statements and Prospectuses
and all amendments and supplements thereto, and the expense of preparing,
printing, mailing and otherwise distributing prospectuses and statements of
additional information, annual or interim reports or proxy materials to
shareholders.
 
    (b) The Distributor shall bear all expenses incurred by it in connection
with its duties and activities under this Agreement including the payment to
Selected Dealers of any sales commissions, service fees and other expenses for
sales of a Fund's Shares (except such expenses as are specifically undertaken
herein by a Fund) incurred or paid by Selected Dealers, including DWR. The
Distributor shall bear the costs and expenses of preparing, printing and
distributing any supplementary sales literature used by the Distributor or
furnished by it for use by Selected Dealers in connection with the offering of
the Shares for sale. Any expenses of advertising incurred in connection with
such offering will also be the obligation of the Distributor. It is understood
and agreed that, so long as a Fund's Plan of Distribution pursuant to Rule 12b-1
under the 1940 Act ("Rule 12b-1 Plan") continues in effect, any expenses
incurred by the Distributor hereunder may be paid in accordance with the terms
of such Rule 12b-1 Plan.
 
    (c) Each Fund shall pay the filing fees, and, if necessary or advisable in
connection therewith, bear the cost and expense of qualifying each Fund as a
broker or dealer, in such states of the United States or other jurisdictions as
shall be selected by the Fund and the Distributor pursuant to Section 5(c)
hereof and the cost and expenses payable to each such state for continuing to
offer Shares therein until the Fund decides to discontinue selling Shares
pursuant to Section 5(c) hereof.
 
    SECTION 9.  INDEMNIFICATION.
 
    (a) Each Fund shall indemnify and hold harmless the Distributor and each
person, if any, who controls the Distributor against any loss, liability, claim,
damage or expense (including the reasonable cost of investigating or defending
any alleged loss, liability, claim, damage or expense and reasonable counsel
fees incurred in connection therewith) arising by reason of any person acquiring
any Shares, which may be based upon the 1933 Act, or on any other statute or at
common law, on the ground that the Registration Statement or related Prospectus
and Statement of Additional Information, as from time to time amended
 
                                       4
<PAGE>
and supplemented, or the annual or interim reports to shareholders of a Fund,
includes an untrue statement of a material fact or omits to state a material
fact required to be stated therein or necessary in order to make the statements
therein not misleading, unless such statement or omission was made in reliance
upon, and in conformity with, information furnished to the Fund in connection
therewith by or on behalf of the Distributor; provided, however, that in no case
(i) is the indemnity of a Fund in favor of the Distributor and any such
controlling persons to be deemed to protect the Distributor or any such
controlling persons thereof against any liability to a Fund or its security
holders to which the Distributor or any such controlling persons would otherwise
be subject by reason of willful misfeasance, bad faith or gross negligence in
the performance of its duties or by reason of reckless disregard of its
obligations and duties under this Agreement; or (ii) is a Fund to be liable
under its indemnity agreement contained in this paragraph with respect to any
claim made against the Distributor or any such controlling persons, unless the
Distributor or any such controlling persons, as the case may be, shall have
notified the Fund in writing within a reasonable time after the summons or other
first legal process giving information of the nature of the claim shall have
been served upon the Distributor or uch controlling persons (or after the
Distributor or such controlling persons shall have received notice of such
service on any designated agent), but failure to notify the Fund of any such
claim shall not relieve it from any liability which it may have to the person
against whom such action is brought otherwise than on account of its indemnity
agreement contained in this paragraph. Each Fund will be entitled to participate
at its own expense in the defense, or, if it so elects, to assume the defense,
of any such suit brought to enforce any such liability, but if a Fund elects to
assume the defense, such defense shall be conducted by counsel chosen by it and
satisfactory to the Distributor or such controlling person or persons, defendant
or defendants in the suit. In the event the Fund elects to assume the defense of
any such suit and retain such counsel, the Distributor or such controlling
person or persons, defendant or defendants in the suit, shall bear the fees and
expenses of any additional counsel retained by them, but, in case the Fund does
not elect to assume the defense of any such suit, it will reimburse the
Distributor or such controlling person or persons, defendant or defendants in
the suit, for the reasonable fees and expenses of any counsel retained by them.
Each Fund shall promptly notify the Distributor of the commencement of any
litigation or proceedings against it or any of its officers or
Directors/Trustees in connection with the issuance or sale of the Shares.
 
    (b) (i) The Distributor shall indemnify and hold harmless each Fund and each
of its Directors/ Trustees and officers and each person, if any, who controls
the Fund against any loss, liability, claim, damage, or expense described in the
indemnity contained in subsection (a) of this Section, but only with respect to
statements or omissions made in reliance upon, and in conformity with,
information furnished to a Fund in writing by or on behalf of the Distributor
for use in connection with the Registration Statement or related Prospectus and
Statement of Additional Information, as from time to time amended, or the annual
or interim reports to shareholders.
 
        (ii) The Distributor shall indemnify and hold harmless each Fund and
each Fund's transfer agent, individually and in its capacity as the Fund's
transfer agent, from and against any claims, damages and liabilities which arise
as a result of actions taken pursuant to instructions from, or on behalf of, the
Distributor to: (1) redeem all or a part of shareholder accounts in the Fund
pursuant to Section 4(g) hereof and pay the proceeds to, or as directed by, the
Distributor for the account of each shareholder whose Shares are so redeemed;
and (2) register Shares in the names of investors, confirm the issuance thereof
and receive payment therefor pursuant to Section 3(e) hereof.
 
        (iii) In case any action shall be brought against a Fund or any person
so indemnified by this Section 9(b) in respect of which indemnity may be sought
against the Distributor, the Distributor shall have the rights and duties given
to a Fund, and the Fund and each person so indemnified shall have the rights and
duties given to the Distributor, by the provisions of subsection (a) of this
Section 9.
 
    (c) If the indemnification provided for in this Section 9 is unavailable or
insufficient to hold harmless an indemnified party under subsection (a) or (b)
above in respect of any losses, claims, damages, liabilities or expenses (or
actions in respect thereof) referred to herein, then each indemnifiying party
shall contribute to the amount paid or payable by such indemnified party as a
result of such losses, claims, damages, liabilities or expenses (or actions in
respect thereof) in such proportion as is appropriate to reflect the relative
benefits received by a Fund on the one hand and the Distributor on the other
from the
 
                                       5
<PAGE>
offering of the Shares. If, however, the allocation provided by the immediately
preceding sentence is not permitted by applicable law, then each indemnifying
party shall contribute to such amount paid or payable by such indemnified party
in such proportion as is appropriate to reflect not only such relative benefits
but also the relative fault of a Fund on the one hand and the Distributor on the
other in connection with the statements or omissions which resulted in such
losses, claims, damages, liabilities or expenses (or actions in respect
thereof), as well as any other relevant equitable considerations. The relative
benefits received by a Fund on the one hand and the Distributor on the other
shall be deemed to be in the same proportion as the total net proceeds from the
offering (before deducting expenses) received by the Fund bear to the total
compensation received by the Distributor, in each case as set forth in the
Prospectus. The relative fault shall be determined by reference to, among other
things, whether the untrue or alleged untrue statement of a material fact or the
omission or alleged omission to state a material fact relates to information
supplied by a Fund or the Distributor and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
statement or omission. Each Fund and the Distributor agree that it would not be
just and equitable ifcontribution were determined by pro rata allocation or by
any other method of allocation which does not take into account the equitable
considerations referred to above. The amount paid or payable by an indemnified
party as a result of the losses, claims, damages, liabilities or expenses (or
actions in respect thereof) referred to above shall be deemed to include any
legal or other expenses reasonably incurred by such indemnified party in
connection with investigating or defending any such claim. Notwithstanding the
provisions of this subsection (c), the Distributor shall not be required to
contribute any amount in excess of the amount by which the total price at which
the Shares distributed by it to the public were offered to the public exceeds
the amount of any damages which it has otherwise been required to pay by reason
of such untrue or alleged untrue statement or omission or alleged omission. No
person guilty of fraudulent misrepresentation (within the meaning of Section
11(f) of the 1933 Act) shall be entitled to contribution from any person who was
not guilty of such fraudulent misrepresentation.
 
    SECTION 10.  DURATION AND TERMINATION OF THIS AGREEMENT.  This Agreement
shall become effective with respect to a Fund as of the date first above written
and shall remain in force until April 30, 1998, and thereafter, but only so long
as such continuance is specifically approved at least annually by (i) the Board
of Directors/Trustees of each Fund, or by the vote of a majority of the
outstanding voting securities of the Fund, cast in person or by proxy, and (ii)
a majority of those Directors/Trustees who are not parties to this Agreement or
interested persons of any such party and who have no direct or indirect
financial interest in this Agreement or in the operation of the Fund's Rule
12b-1 Plan or in any agreement related thereto, cast in person at a meeting
called for the purpose of voting upon such approval.
 
    This Agreement may be terminated at any time without the payment of any
penalty, by the Directors/ Trustees of a Fund, by a majority of the
Directors/Trustees of a Fund who are not interested persons of the Fund and who
have no direct or indirect financial interest in this Agreement, or by vote of a
majority of the outstanding voting securities of a Fund, or by the Distributor,
on sixty days' written notice to the other party. This Agreement shall
automatically terminate in the event of its assignment.
 
    The terms "vote of a majority of the outstanding voting securities,"
"assignment" and "interested person," when used in this Agreement, shall have
the respective meanings specified in the 1940 Act.
 
    SECTION 11.  AMENDMENTS OF THIS AGREEMENT.  This Agreement may be amended by
the parties only if such amendment is specifically approved by (i) the
Directors/Trustees of a Fund, or by the vote of a majority of outstanding voting
securities of a Fund, and (ii) a majority of those Directors/Trustees of a Fund
who are not parties to this Agreement or interested persons of any such party
and who have no direct or indirect financial interest in this Agreement or in
any Agreement related to the Fund's Rule 12b-1 Plan, cast in person at a meeting
called for the purpose of voting on such approval.
 
    SECTION 12.  ADDITIONAL FUNDS.  If at any time another Fund desires to
appoint the Distributor as its principal underwriter and distributor under this
Agreement, it shall notify the Distributor in writing. If the Distributor is
willing to serve as the Fund's principal underwriter and distributor under this
Agreement, it shall notify the Fund in writing, whereupon such other Fund shall
become a Fund hereunder.
 
    SECTION 13.  GOVERNING LAW.  This Agreement shall be construed in accordance
with the law of the State of New York and the applicable provisions of the 1940
Act. To the extent the applicable law of the
 
                                       6
<PAGE>
State of New York, or any of the provisions herein, conflicts with the
applicable provisions of the 1940 Act, the latter shall control.
 
    SECTION 14.  PERSONAL LIABILITY.  With respect to any Fund that is organized
as an unincorporated business trust under the laws of the Commonwealth of
Massachusetts, its Declaration of the Trust (each, a "Declaration") is on file
in the office of the Secretary of the Commonwealth of Massachusetts. Each
Declaration provides that the name of the Fund refers to the Trustees under the
Declaration collectively as Trustees, but not as individuals or personally; and
no Trustee, shareholder, officer, employee or agent of any Fund shall be held to
any personal liability, nor shall resort be had to their private property for
the satisfaction of any obligation or claim or otherwise, in connection with the
affairs of any Fund, but the Trust Estate only shall be liable.
 
    IN WITNESS WHEREOF, the parties hereto have executed and delivered this
Agreement as of the day and year first written in New York, New York.
 
                                          ON BEHALF OF THE FUNDS SET FORTH ON
                                          SCHEDULE A, ATTACHED HERETO
 
                                          By: ..................................
 
                                          DEAN WITTER DISTRIBUTORS INC.
 
                                          By: ..................................
 
                                       7
<PAGE>
                               DEAN WITTER FUNDS
                             DISTRIBUTION AGREEMENT
                                   SCHEDULE A
                                AT JULY 28, 1997
 
1)         Dean Witter American Value Fund
2)         Dean Witter Balanced Growth Fund
3)         Dean Witter Balanced Income Fund
4)         Dean Witter California Tax-Free Income Fund
5)         Dean Witter Capital Appreciation Fund
6)         Dean Witter Capital Growth Securities
7)         Dean Witter Convertible Securities Trust
8)         Dean Witter Developing Growth Securities Trust
9)         Dean Witter Diversified Income Trust
10)        Dean Witter Dividend Growth Securities Inc.
11)        Dean Witter European Growth Fund Inc.
12)        Dean Witter Federal Securities Trust
13)        Dean Witter Financial Services Trust
14)        Dean Witter Global Asset Allocation Fund
15)        Dean Witter Global Dividend Growth Securities
16)        Dean Witter Global Utilities Fund
17)        Dean Witter Health Sciences Trust
18)        Dean Witter High Yield Securities Inc.
19)        Dean Witter Income Builder Fund
20)        Dean Witter Information Fund
21)        Dean Witter Intermediate Income Securities
22)        Dean Witter International SmallCap Fund
23)        Dean Witter Japan Fund
24)        Dean Witter Managers' Select Fund
25)        Dean Witter Market Leader Trust
26)        Dean Witter Mid-Cap Growth Fund
27)        Dean Witter Natural Resource Development Securities Inc.
28)        Dean Witter New York Tax-Free Income Fund
29)        Dean Witter Pacific Growth Fund Inc.
30)        Dean Witter Precious Metals and Minerals Trust
31)        Dean Witter Special Value Fund
32)        Dean Witter Strategist Fund
33)        Dean Witter Tax-Exempt Securities Trust
34)        Dean Witter U.S. Government Securities Trust
35)        Dean Witter Utilities Fund
36)        Dean Witter Value-Added Market Series/Equity Portfolio
37)        Dean Witter World Wide Income Trust
38)        Dean Witter World Wide Investment Trust

 
                                       8


<PAGE>

                                                                  Exhibit 99.11





CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the use in the Statement of Additional Information 
constituting part of this Post-Effective Amendment No. 21 to the 
registration statement on Form N-1A (the "Registration Statement") of our 
report dated April 11, 1997, relating to the financial statements and 
financial highlights of Dean Witter Natural Resource Development Securities 
Inc., which appears in such Statement of Additional Information, and to the 
incorporation by reference of our report into the Prospectus which 
constitutes part of this Registration Statement. We also consent to the 
references to us under the headings "Independent Accountants" and "Experts" 
in such Statement of Additional Information and to the reference to us under 
the heading "Financial Highlights" in such Prospectus.


PRICE WATERHOUSE LLP
1177 Avenue of the Americas
New York, New York 10036
July 18, 1997




<PAGE>

                                                               

       AMENDED AND RESTATED PLAN OF DISTRIBUTION PURSUANT TO RULE 12b-1
                                      OF 
           DEAN WITTER NATURAL RESOURCE DEVELOPMENT SECURITIES INC. 

   WHEREAS, Dean Witter Natural Resource Development Securities Inc. (the 
"Fund") is engaged in business as an open-end management investment company 
and is registered as such under the Investment Company Act of 1940, as 
amended (the "Act"); and 

   WHEREAS, on October 26, 1995, the Fund most recently amended and restated 
a Plan of Distribution pursuant to Rule 12b-1 under the Act which had 
initially been adopted on July 2, 1994, and the Directors then determined 
that there was a reasonable likelihood that adoption of the Plan of 
Distribution, as then amended and restated, would benefit the Fund and its 
shareholders; and 

   WHEREAS, the Directors believe that continuation of said Plan of 
Distribution, as amended and restated herein, is reasonably likely to 
continue to benefit the Fund and its shareholders; and 

   WHEREAS, on July 2, 1994, the Fund and Dean Witter Reynolds Inc. ("DWR") 
amended and restated a Distribution Agreement which had initially been 
adopted on November 10, 1981, pursuant to which the Fund employed DWR as 
distributor of the Fund's shares; and 

   WHEREAS, on January 4, 1993, the Fund and DWR substituted Dean Witter 
Distributors Inc. (the "Distributor") in the place of DWR as distributor of 
the Fund's shares; and 

   WHEREAS, the Fund, DWR and the Distributor intend that DWR will continue 
to promote the sale of Fund shares and provide personal services to Fund 
shareholders with respect to their holdings of Fund shares; and 

   WHEREAS, the Fund and the Distributor entered into a separate Distribution 
Agreement dated as of July 28, 1997 (which superseded a Distribution 
Agreement dated May 31, 1997, which Agreement in turn superseded an Agreement 
dated June 30, 1993), pursuant to which the Fund has employed the Distributor 
in such capacity during the continuous offering of shares of the Fund. 

   NOW, THEREFORE, the Fund hereby amends the Plan of Distribution previously 
adopted and amended and restated, and the Distributor hereby agrees to the 
terms of said Plan of Distribution (the "Plan"), as amended herein, in 
accordance with Rule 12b-1 under the Act on the following terms and 
conditions with respect to the Class A, Class B and Class C shares of the 
Fund: 

   1(a)(i). With respect to Class A and Class C shares of the Fund, the 
Distributor hereby undertakes to directly bear all costs of rendering the 
services to be performed by it under this Plan and under the Distribution 
Agreement, except for those specific expenses that the Directors determine to 
reimburse as hereinafter set forth. 

   1(a)(ii). The Fund is hereby authorized to reimburse the Distributor, DWR, 
its affiliates and other broker-dealers for distribution expenses incurred by 
them specifically on behalf of Class A and Class C shares of the Fund. 
Reimbursement will be made through payments at the end of each month. The 
amount of each monthly payment may in no event exceed an amount equal to a 
payment at the annual rate of 0.25%, in the case of Class A, and 1.0%, in the 
case of Class C, of the average net assets of the respective Class during the 
month. With respect to Class A, in the case of all expenses other than 
expenses representing the service fee and, with respect to Class C, in the 
case of all expenses other than expenses representing a gross sales credit or 
a residual to account executives, such amounts shall be determined at the 
beginning of each calendar quarter by the Directors, including a majority of 
the Directors who are not "interested persons" of the Fund, as defined in the 
Act. Expenses representing the service fee (for Class A) or a gross sales 
credit or a residual to account executives (for Class C) may be reimbursed 
without prior determination. In the event that the Distributor proposes that 
monies shall be reimbursed for other than such expenses, then in making the 
quarterly determinations of the amounts that may be expended by the Fund, the 
Distributor shall provide, and the Directors shall review, a quarterly budget 
of projected distribution expenses to be incurred by the Distributor, DWR, 
its affiliates or other broker-dealers on behalf of the Fund together with a 
report explaining the purposes and anticipated 

<PAGE>
benefits of incurring such expenses. The Directors shall determine the 
particular expenses, and the portion thereof that may be borne by the Fund, 
and in making such determination shall consider the scope of the 
Distributor's commitment to promoting the distribution of the Fund's Class A 
and Class C shares directly or through DWR, its affiliates or other 
broker-dealers. 

   1(a)(iii). If, as of the end of any calendar year, the actual expenses 
incurred by the Distributor, DWR, its affiliates and other broker-dealers on 
behalf of Class A or Class C shares of the Fund (including accrued expenses 
and amounts reserved for incentive compensation and bonuses) are less than 
the amount of payments made by such Class pursuant to this Plan, the 
Distributor shall promptly make appropriate reimbursement to the appropriate 
Class. If, however, as of the end of any calendar year, the actual expenses 
(other than expenses representing a gross sales credit) of the Distributor, 
DWR, its affiliates and other broker-dealers are greater than the amount of 
payments made by Class A or Class C shares of the Fund pursuant to this Plan, 
such Class will not reimburse the Distributor, DWR, its affiliates or other 
broker-dealers for such expenses through payments accrued pursuant to this 
Plan in the subsequent fiscal year. Expenses representing a gross sales 
credit may be reimbursed in the subsequent calendar year. 

   1(b). With respect to Class B shares of the Fund, the Fund shall pay to 
the Distributor, as the distributor of securities of which the Fund is the 
issuer, compensation for distribution of its Class B shares at the rate of 
the lesser of (i) 1.0% per annum of the average daily aggregate sales of the 
Fund's Class B shares since the inception of the Plan (not including 
reinvestment of dividends and capital gains distributions from the Fund) less 
the average daily aggregate net asset value of the Fund's Class B shares 
redeemed since the inception of the Plan upon which a contingent deferred 
sales charge has been imposed or upon which such charge has been waived, or 
(ii) 1.0% per annum of the average daily net assets of Class B attributable 
to shares issued since the inception of the Plan. Such compensation shall be 
calculated and accrued daily and paid monthly or at such other intervals as 
the Directors shall determine. 

   The Distributor may direct that all or any part of the amounts receivable 
by it under this Plan be paid directly to DWR, its affiliates or other 
broker-dealers who provide distribution and shareholder services. All 
payments made hereunder pursuant to the Plan shall be in accordance with the 
terms and limitations of the Rules of the Association of the National 
Association of Securities Dealers, Inc. 

   2. With respect to expenses incurred by each Class, the amount set forth 
in paragraph 1 of this Plan shall be paid for services of the Distributor, 
DWR its affiliates and other broker-dealers it may select in connection with 
the distribution of the Fund's shares, including personal services to 
shareholders with respect to their holdings of Fund shares, and may be spend 
by the Distributor, DWR, its affiliates and such broker-dealers on any 
activities or expenses related to the distribution of the Fund's shares or 
services to shareholders, including, but not limited to: compensation to, and 
expenses of, account executives or other employees of the Distributor, DWR, 
its affiliates or other broker-dealers; overhead and other branch office 
distribution-related expenses and telephone expenses of persons who engage in 
or support distribution of shares or who provide personal services to 
shareholders; printing of prospectuses and reports for other than existing 
shareholders; preparation, printing and distribution of sales literature and 
advertising materials and, with respect to Class B, opportunity costs in 
incurring the foregoing expenses (which may be calculated as a carrying 
charge on the excess of the distribution expenses incurred by the 
Distributor, DWR, its affiliates or other broker-dealers over distribution 
revenues received by them, such excess being hereinafter referred to as 
"carryover expenses"). The overhead and other branch office 
distribution-related expenses referred to in this paragraph 2 may include: 
(a) the expenses operating the branch offices of the Distributor or other 
broker-dealers, including DWR, in connection with the sale of the Fund 
shares, including lease costs, the salaries and employee benefits of 
operations and sales support personnel, utility costs, communications costs 
and the costs of stationery and supplies; (b) the costs of client sales 
seminars; (c) travel expenses of mutual fund sales coordinators to promote 
the sale of Fund shares; and (d) other expenses relating to branch promotion 
of Fund sales. Payments may also be made with respect to distribution 
expenses incurred in connection with the distribution of shares, including 

                                2           
<PAGE>
personal services to shareholders with respect to holdings of such shares, of 
an investment company whose assets are acquired by the Fund in a tax-free 
reorganization, provided that, with respect to Class B, carryover expenses as 
a percentage of Fund assets will not be materially increased thereby. It is 
contemplated that, with respect to Class A shares, the entire fee set forth 
in paragraph 1(a) will be characterized as a service fee within the meaning 
of the National Association of Securities Dealers, Inc. guidelines and that, 
with respect to Class B and Class C shares, payments at the annual rate of 
0.25% will be so characterized. 

   3. This Plan, as amended and restated, shall not take effect with respect 
to any particular Class until it has been approved, together with any related 
agreements, by votes of a majority of the Board of Directors of the Fund and 
of the Directors who are not "interested persons" of the Fund (as defined in 
the Act) and have no direct financial interest in the operation of this Plan 
or any agreements related to it (the "Rule 12b-1 Directors"), cast in person 
at a meeting (or meetings) called for the purpose of voting on this Plan and 
such related agreements. 

   4. This Plan shall continue in effect with respect to each Class until 
April 30, 1998, and from year to year thereafter, provided such continuance 
is specifically approved at least annually in the manner provided for 
approval of this Plan in paragraph 3 hereof. 

   5. The Distributor shall provide to the Directors of the Fund and the 
Directors shall review, at least quarterly, a written report of the amounts 
so expended and the purposes for which such expenditures were made. In this 
regard, the Directors shall request the Distributor to specify such items of 
expenses as the Directors deem appropriate. The Directors shall consider such 
items as they deem relevant in making the determinations required by 
paragraph 4 hereof. 

   6. This Plan may be terminated at any time with respect to a Class by vote 
of a majority of the Rule 12b-1 Directors, or by vote of a majority of the 
outstanding voting securities of the Fund. The Plan may remain in effect with 
the respect to a particular Class even if the Plan has been terminated in 
accordance with this paragraph 6 with respect to any other Class. In the 
event of any such termination or in the event of nonrenewal, the Fund shall 
have no obligation to pay expenses which have been incurred by the 
Distributor, DWR, its affiliates or other broker-dealers in excess of 
payments made by the Fund pursuant to this Plan. However, with respect to 
Class B, this shall not preclude consideration by the Directors of the manner 
in which such excess expenses shall be treated. 

   7. This Plan may not be amended with respect to any Class to increase 
materially the amount each Class may spend for distribution provided in 
paragraph 1 hereof unless such amendment is approved by a vote of at least a 
majority (as defined in the Act) of the outstanding voting securities of that 
Class, and no material amendment to the Plan shall be made unless approved in 
the manner provided for approval in paragraph 3 hereof. Class B shares will 
have the right to vote on any material increase in the fee set forth in 
paragraph 1(a) above affecting Class A shares. 

   8. While this Plan is in effect, the selection and nomination of Directors 
who are not interested persons (as defined in the Act) of the Fund shall be 
committed to the discretion of the Directors who are not interested persons. 

   9. The Fund shall preserve copies of this Plan and any related agreements 
and all reports made pursuant to paragraph 5 hereof, for a period of not less 
than six years from the date of this Plan, any such agreement or any such 
report, as the case may be, the first two years in an easily accessible 
place. 

                                3           
<PAGE>
   IN WITNESS WHEREOF, the Fund, the Distributor and DWR have executed this 
amended and restated Plan of Distribution as of the day and year set forth 
below in New York, New York. 

Date: July 2, 1994 
      As Amended on April 15, 1987, 
      January 4, 1993, April 28, 1993, 
      October 26, 1995 and July 28, 1997 

Attest:                                DEAN WITTER NATURAL RESOURCE DEVELOPMENT
                                       SECURITIES INC. 


 ....................................    By:................................... 


Attest:                                DEAN WITTER DISTRIBUTORS INC.


 ....................................    By:................................... 


Attest:                                DEAN WITTER REYNOLDS INC. 


 ....................................    By:................................... 



                                4           


<PAGE>
                               DEAN WITTER FUNDS
                              MULTIPLE CLASS PLAN
                             PURSUANT TO RULE 18f-3
 
INTRODUCTION
 
    This plan (the "Plan") is adopted pursuant to Rule 18f-3(d) of the
Investment Company Act of 1940, as amended (the "1940 Act"), and will be
effective as of July 28, 1997. The Plan relates to shares of the open-end
investment companies to which Dean Witter InterCapital Inc. acts as investment
manager, that are listed on Schedule A, as may be amended from time to time
(each, a "Fund" and collectively, the "Funds"). The Funds are distributed
pursuant to a system (the "Multiple Class System") in which each class of shares
(each, a "Class" and collectively, the "Classes") of a Fund represents a pro
rata interest in the same portfolio of investments of the Fund and differs only
to the extent outlined below.
 
I.  DISTRIBUTION ARRANGEMENTS
 
    One or more Classes of shares of the Funds are offered for purchase by
investors with the sales load structures described below. In addition, pursuant
to Rule 12b-1 under the 1940 Act, the Funds have each adopted a Plan of
Distribution (the "12b-1 Plan") under which shares of certain Classes are
subject to the service and/or distribution fees ("12b-1 fees") described below.
 
    1.  CLASS A SHARES
 
    Class A shares are offered with a front-end sales load ("FESL"). The
schedule of sales charges applicable to a Fund and the circumstances under which
the sales charges are subject to reduction are set forth in each Fund's current
prospectus. As stated in each Fund's current prospectus, Class A shares may be
purchased at net asset value (without a FESL): (i) in the case of certain large
purchases of such shares; and (ii) by certain limited categories of investors,
in each case, under the circumstances and conditions set forth in each Fund's
current prospectus. Class A shares purchased at net asset value may be subject
to a contingent deferred sales charge ("CDSC") on redemptions made within one
year of purchase. Further information relating to the CDSC, including the manner
in which it is calculated, is set forth in paragraph 6 below. Class A shares are
also subject to payments under each Fund's 12b-1 Plan to reimburse Dean Witter
Distributors Inc., Dean Witter Reynolds Inc. ("DWR"), its affiliates and other
broker-dealers for distribution expenses incurred by them specifically on behalf
of the Class, assessed at an annual rate of up to 0.25% of average daily net
assets. The entire amount of the 12b-1 fee represents a service fee within the
meaning of National Association of Securities Dealers, Inc. ("NASD") guidelines.
 
    2.  CLASS B SHARES
 
    Class B shares are offered without a FESL, but will in most cases be subject
to a six-year declining CDSC which is calculated in the manner set forth in
paragraph 6 below. Class B shares purchased by certain qualified
employer-sponsored benefit plans are subject to a three-year declining CDSC
which is calculated in the manner set forth in paragraph 6 below. The schedule
of CDSC charges applicable to each Fund is set forth in each Fund's current
prospectus. With the exception of certain of the Funds which have a different
formula described below (Dean Witter American Value Fund, Dean Witter Natural
Resource Development Securities Inc., Dean Witter Strategist Fund and Dean
Witter Dividend Growth Securities Inc.)(1), Class B
 
- ------------
 
(1)The payments under the 12b-1 Plan for each of Dean Witter American Value
Fund, Dean Witter Natural Resource Development Securities Inc. and Dean Witter
Dividend Growth Securities Inc. are assessed at the annual rate of 1.0% of the
lesser of: (a) the average daily aggregate gross sales of the Fund's Class B
shares since the inception of the Fund's Plan (not including reinvestment of
dividends or capital gains distributions), less the average daily aggregate net
asset value of the Fund's Class B shares redeemed since the Plan's inception
upon which a contingent deferred sales charge has been imposed or waived, or (b)
the average daily net assets of Class B attributable to shares issued, net of
related shares redeemed, since inception of the Plan. The payments under the
12b-1 Plan for the Dean Witter Strategist Fund are assessed at the annual rate
of: (i) 1% of the lesser of (a) the average daily aggregate gross sales of the
Fund's Class B shares since the effectiveness of the first amendment of the Plan
on November 8, 1989 (not including reinvestment of dividends or capital gains
distributions), less the average daily aggregate net asset value of the Fund's
Class B shares redeemed since the effectiveness of the first amended Plan, upon
which a contingent deferred sales charge has been imposed or waived, or (b) the
average daily net assets of Class B attributable to shares issued, net of
related shares redeemed, since the effectiveness of the first amended Plan; plus
(ii) 0.25% of the average daily net assets of Class B attributable to shares
issued, net of related shares redeemed, prior to effectiveness of the first
amended Plan.
 
                                       1
<PAGE>
shares are also subject to a fee under each Fund's respective 12b-1 Plan,
assessed at the annual rate of up to 1.0% of either: (a) the lesser of (i) the
average daily aggregate gross sales of the Fund's Class B shares since the
inception of the Fund (not including reinvestment of dividends or capital gains
distributions), less the average daily aggregate net asset value of the Fund's
Class B shares redeemed since the Fund's inception upon which a CDSC has been
imposed or waived, or (ii) the average daily net assets of Class B; or (b) the
average daily net assets of Class B. A portion of the 12b-1 fee equal to up to
0.25% of the Fund's average daily net assets is characterized as a service fee
within the meaning of the NASD guidelines and the remaining portion of the 12b-1
fee, if any, is characterized as an asset-based sales charge. Also, Class B
shares have a conversion feature ("Conversion Feature") under which such shares
convert to Class A shares after a certain holding period. Details of the
Conversion Feature are set forth in Section IV below.
 
    3.  CLASS C SHARES
 
    Class C shares are offered without imposition of a FESL, but will in most
cases be subject to a CDSC of 1.0% on redemptions made within one year after
purchase. Further information relating to the CDSC is set forth in paragraph 6
below. In addition, Class C shares, under each Fund's 12b-1 Plan, are subject to
12b-1 payments to reimburse Dean Witter Distributors Inc., DWR, its affiliates
and other broker-dealers for distribution expenses incurred by them specifically
on behalf of the Class, assessed at the annual rate of up to 1.0% of the average
daily net assets of the Class. A portion of the 12b-1 fee equal to up to 0.25%
of the Fund's average daily net assets is characterized as a service fee within
the meaning of NASD guidelines. Unlike Class B shares, Class C shares do not
have the Conversion Feature.
 
    4.  CLASS D SHARES
 
    Class D shares are offered without imposition of a FESL, CDSC or a 12b-1 fee
for purchases of Fund shares by (i) investors meeting an initial minimum
investment requirement and (ii) certain other limited categories of investors,
in each case, as may be approved by the Boards of Directors/Trustees of the
Funds and as disclosed in each Fund's current prospectus.
 
    5.  ADDITIONAL CLASSES OF SHARES
 
    The Boards of Directors/Trustees of the Funds have the authority to create
additional Classes, or change existing Classes, from time to time, in accordance
with Rule 18f-3 under the 1940 Act.
 
    6.  CALCULATION OF THE CDSC
 
    Any applicable CDSC is calculated based upon the lesser of net asset value
of the shares at the time of purchase or at the time of redemption. The CDSC
does not apply to amounts representing an increase in share value due to capital
appreciation and shares acquired through the reinvestment of dividends or
capital gains distributions. The CDSC schedule applicable to a Fund and the
circumstances in which the CDSC is subject to waiver are set forth in each
Fund's prospectus.
 
II.  EXPENSE ALLOCATIONS
 
    Expenses incurred by a Fund are allocated among the various Classes of
shares pro rata based on the net assets of the Fund attributable to each Class,
except that 12b-1 fees relating to a particular Class are allocated directly to
that Class. In addition, other expenses associated with a particular Class
(except advisory or custodial fees), may be allocated directly to that Class,
provided that such expenses are reasonably identified as specifically
attributable to that Class and the direct allocation to that Class is approved
by the Fund's Board of Directors/Trustees.
 
III.  CLASS DESIGNATION
 
    All shares of the Funds held prior to July 28, 1997 (other than the shares
held by certain employee benefit plans established by DWR and its affiliate, SPS
Transaction Services, Inc., shares of Funds offered with a FESL, and shares of
Dean Witter Balanced Growth Fund and Dean Witter Balanced Income Fund) have been
designated Class B shares. Shares held prior to July 28, 1997 by such employee
benefit plans have been designated Class D shares. Shares held prior to July 28,
1997 of Funds offered with a FESL have been designated Class D shares. In
addition, shares of Dean Witter American Value Fund purchased prior to April 30,
1984, shares of Dean Witter Strategist Fund purchased prior to November 8, 1989
and shares of Dean Witter Natural Resource Development Securities Inc. and Dean
Witter Dividend Growth Securities Inc. purchased prior to July 2, 1984 (with
respect to such shares of each Fund, including such proportion of shares
acquired through reinvestment of dividends and capital gains distributions as
the total number of shares acquired prior to each of the preceding dates in this
sentence bears to the total number of shares purchased and owned by the
shareholder of that Fund) have been designated Class D shares. Shares of Dean
Witter Balanced Growth Fund and Dean Witter Balanced Income Fund held prior to
July 28, 1997 have
 
                                       2
<PAGE>
been designated Class C shares except that shares of Dean Witter Balanced Growth
Fund and Dean Witter Balanced Income Fund held prior to July 28, 1997 that were
acquired in exchange for shares of an investment company offered with a CDSC
have been designated Class B shares and those that were acquired in exchange for
shares of an investment company offered with a FESL have been designated Class A
shares.
 
IV.  THE CONVERSION FEATURE
 
    Class B shares held before May 1, 1997 will convert to Class A shares in
May, 2007, except that Class B shares which are purchased before July 28, 1997
by trusts for which Dean Witter Trust Company ("DWTC") or Dean Witter Trust FSB
("DWTFSB") provides discretionary trustee services will convert to Class A
shares on or about August 29, 1997 (the CDSC will not be applicable to such
shares upon the conversion). In all other instances, Class B shares of each Fund
will automatically convert to Class A shares, based on the relative net asset
values of the shares of the two Classes on the conversion date, which will be
approximately ten (10) years after the date of the original purchase.
Conversions will be effected once a month. The 10 year period will be calculated
from the last day of the month in which the shares were purchased or, in the
case of Class B shares acquired through an exchange or a series of exchanges,
from the last day of the month in which the original Class B shares were
purchased, provided that shares originally purchased before May 1, 1997 will
convert to Class A shares in May, 2007. Except as set forth below, the
conversion of shares purchased on or after May 1, 1997 will take place in the
month following the tenth anniversary of the purchase. There will also be
converted at that time such proportion of Class B shares acquired through
automatic reinvestment of dividends owned by the shareholder as the total number
of his or her Class B shares converting at the time bears to the total number of
outstanding Class B shares purchased and owned by the shareholder. In the case
of Class B shares held by a 401(k) plan or other employer-sponsored plan
qualified under Section 401(a) of the Internal Revenue Code (the "Code") and for
which DWTC or DWTFSB serves as Trustee or the 401(k) Support Services Group of
DWR serves as recordkeeper, all Class B shares will convert to Class A shares on
the conversion date of the first shares of a Fund purchased by that plan. In the
case of Class B shares previously exchanged for shares of an "Exchange Fund" (as
such term is defined in the prospectus of each Fund), the period of time the
shares were held in the Exchange Fund (calculated from the last day of the month
in which the Exchange Fund shares were acquired) is excluded from the holding
period for conversion. If those shares are subsequently re-exchanged for Class B
shares of a Fund, the holding period resumes on the last day of the month in
which Class B shares are reacquired.
 
    Effectiveness of the Conversion Feature is subject to the continuing
availability of a ruling of the Internal Revenue Service or an opinion of
counsel to the effect that (i) the conversion of shares does not constitute a
taxable event under the Code; (ii) Class A shares received on conversion will
have a basis equal to the shareholder's basis in the converted Class B shares
immediately prior to the conversion; and (iii) Class A shares received on
conversion will have a holding period that includes the holding period of the
converted Class B shares. The Conversion Feature may be suspended if the Ruling
or opinion is no longer available. In such event, Class B shares would continue
to be subject to Class B fees under the applicable Fund's 12b-1 Plan.
 
V.  EXCHANGE PRIVILEGES
 
    Shares of each Class may be exchanged for shares of the same Class of the
other Funds and for shares of certain other investment companies without the
imposition of an exchange fee as described in the prospectuses and statements of
additional information of the Funds. The exchange privilege of each Fund may be
terminated or revised at any time by the Fund upon such notice as may be
required by applicable regulatory agencies as described in each Fund's
prospectus.
 
VI.  VOTING
 
    Each Class shall have exclusive voting rights on any matter that relates
solely to its 12b-1 Plan, except that Class B shareholders will have the right
to vote on any proposed material increase in Class A's expenses, including
payments under the Class A 12b-1 Plan, if such proposal is submitted separately
to Class A shareholders. If the amount of expenses, including payments under the
Class A 12b-1 Plan, is increased materially without the approval of Class B
shareholders, the Fund will establish a new Class A for Class B shareholders
whose shares automatically convert on the same terms as applied to Class A
before the increase. In addition, each Class shall have separate voting rights
on any matter submitted to shareholders in which the interests of one Class
differ from the interests of any other Class.
 
                                       3
<PAGE>
                               DEAN WITTER FUNDS
                   MULTIPLE CLASS PLAN PURSUANT TO RULE 18f-3
                                   SCHEDULE A
                                AT JULY 28, 1997
 
1)         Dean Witter American Value Fund
2)         Dean Witter Balanced Growth Fund
3)         Dean Witter Balanced Income Fund
4)         Dean Witter California Tax-Free Income Fund
5)         Dean Witter Capital Appreciation Fund
6)         Dean Witter Capital Growth Securities
7)         Dean Witter Convertible Securities Trust
8)         Dean Witter Developing Growth Securities Trust
9)         Dean Witter Diversified Income Trust
10)        Dean Witter Dividend Growth Securities Inc.
11)        Dean Witter European Growth Fund Inc.
12)        Dean Witter Federal Securities Trust
13)        Dean Witter Financial Services Trust
14)        Dean Witter Global Asset Allocation Fund
15)        Dean Witter Global Dividend Growth Securities
16)        Dean Witter Global Utilities Fund
17)        Dean Witter Health Sciences Trust
18)        Dean Witter High Yield Securities Inc.
19)        Dean Witter Income Builder Fund
20)        Dean Witter Information Fund
21)        Dean Witter Intermediate Income Securities
22)        Dean Witter International SmallCap Fund
23)        Dean Witter Japan Fund
24)        Dean Witter Managers' Select Fund
25)        Dean Witter Market Leader Trust
26)        Dean Witter Mid-Cap Growth Fund
27)        Dean Witter Natural Resource Development Securities Inc.
28)        Dean Witter New York Tax-Free Income Fund
29)        Dean Witter Pacific Growth Fund Inc.
30)        Dean Witter Precious Metals and Minerals Trust
31)        Dean Witter Special Value Fund
32)        Dean Witter Strategist Fund
33)        Dean Witter Tax-Exempt Securities Trust
34)        Dean Witter U.S. Government Securities Trust
35)        Dean Witter Utilities Fund
36)        Dean Witter Value-Added Market Series/Equity Portfolio
37)        Dean Witter World Wide Income Trust
38)        Dean Witter World Wide Investment Trust
 
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