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<PAGE> PAGE 22
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<PAGE> PAGE 23
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SIGNATURE STEPHEN D. FOY
TITLE VP & ASST. CONTROLLE
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</LEGEND>
<SERIES>
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</LEGEND>
<SERIES>
<NUMBER> 032
<NAME> ALL AMERICAN CLASS B
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This schedule contains summary Financial Information extracted from the Form
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</LEGEND>
<SERIES>
<NUMBER> 033
<NAME> ALL AMERICAN CLASS C
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<TABLE> <S> <C>
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</LEGEND>
<SERIES>
<NUMBER> 034
<NAME> ALL AMERICAN CLASS R
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<TABLE> <S> <C>
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This schedule contains Summary Financial Information extracted from the Form
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<SERIES>
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<TABLE> <S> <C>
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<SERIES>
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<NAME> NUVEEN FLAGSHIP INTERMEDIATE MUNI BOND FUND- CLASS C
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<TABLE> <S> <C>
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<SERIES>
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<NAME> NUVEEN FLAGSHIP INTERMEDIATE MUNI BOND FUND- CLASS R
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<GROSS-ADVISORY-FEES> 224
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 478
<AVERAGE-NET-ASSETS> 545
<PER-SHARE-NAV-BEGIN> 10.45
<PER-SHARE-NII> .54
<PER-SHARE-GAIN-APPREC> .41
<PER-SHARE-DIVIDEND> (.54)
<PER-SHARE-DISTRIBUTIONS> .00
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.86
<EXPENSE-RATIO> .59
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the Form
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.
</LEGEND>
<SERIES>
<NUMBER> 041
<NAME> LIMITED TERM MUNICIPAL CLASS A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> APR-30-1998
<PERIOD-START> MAY-1-1997
<PERIOD-END> APR-30-1998
<INVESTMENTS-AT-COST> 449002
<INVESTMENTS-AT-VALUE> 464607
<RECEIVABLES> 8827
<ASSETS-OTHER> 2349
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 475783
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2996
<TOTAL-LIABILITIES> 2996
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 460206
<SHARES-COMMON-STOCK> 40573
<SHARES-COMMON-PRIOR> 40110
<ACCUMULATED-NII-CURRENT> 991
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (4014)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 15604
<NET-ASSETS> 472787
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 25361
<OTHER-INCOME> 0
<EXPENSES-NET> 3649
<NET-INVESTMENT-INCOME> 21712
<REALIZED-GAINS-CURRENT> 1183
<APPREC-INCREASE-CURRENT> 6804
<NET-CHANGE-FROM-OPS> 29699
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 20496
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 7703
<NUMBER-OF-SHARES-REDEEMED> (8423)
<SHARES-REINVESTED> 1182
<NET-CHANGE-IN-ASSETS> 23795
<ACCUMULATED-NII-PRIOR> 1015
<ACCUMULATED-GAINS-PRIOR> (5198)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2018
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3649
<AVERAGE-NET-ASSETS> 435405
<PER-SHARE-NAV-BEGIN> 10.61
<PER-SHARE-NII> 0.51
<PER-SHARE-GAIN-APPREC> 0.19
<PER-SHARE-DIVIDEND> (0.51)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.80
<EXPENSE-RATIO> 0.77
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the Form
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.
</LEGEND>
<SERIES>
<NUMBER> 042
<NAME> FLAGSHIP LIMITED TERM MUNICIPAL CLASS C
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> APR-30-1998
<PERIOD-START> MAY-1-1997
<PERIOD-END> APR-30-1998
<INVESTMENTS-AT-COST> 449002
<INVESTMENTS-AT-VALUE> 464607
<RECEIVABLES> 8827
<ASSETS-OTHER> 2349
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 475783
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2996
<TOTAL-LIABILITIES> 2996
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 460206
<SHARES-COMMON-STOCK> 3147
<SHARES-COMMON-PRIOR> 2222
<ACCUMULATED-NII-CURRENT> 991
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (4014)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 15604
<NET-ASSETS> 472787
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 25361
<OTHER-INCOME> 0
<EXPENSES-NET> 3649
<NET-INVESTMENT-INCOME> 21712
<REALIZED-GAINS-CURRENT> 1183
<APPREC-INCREASE-CURRENT> 6804
<NET-CHANGE-FROM-OPS> 29699
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 1227
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1703
<NUMBER-OF-SHARES-REDEEMED> (865)
<SHARES-REINVESTED> 87
<NET-CHANGE-IN-ASSETS> 23795
<ACCUMULATED-NII-PRIOR> 1015
<ACCUMULATED-GAINS-PRIOR> (5198)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2018
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3649
<AVERAGE-NET-ASSETS> 28178
<PER-SHARE-NAV-BEGIN> 10.60
<PER-SHARE-NII> 0.47
<PER-SHARE-GAIN-APPREC> 0.19
<PER-SHARE-DIVIDEND> (0.47)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.79
<EXPENSE-RATIO> 1.12
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the Form
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.
</LEGEND>
<SERIES>
<NUMBER> 043
<NAME> LIMITED TERM MUNICIPAL CLASS R
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> APR-30-1998
<PERIOD-START> MAY-1-1997
<PERIOD-END> APR-30-1998
<INVESTMENTS-AT-COST> 449002
<INVESTMENTS-AT-VALUE> 464607
<RECEIVABLES> 8827
<ASSETS-OTHER> 2349
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 475783
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2996
<TOTAL-LIABILITIES> 2996
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 460206
<SHARES-COMMON-STOCK> 65
<SHARES-COMMON-PRIOR> 4
<ACCUMULATED-NII-CURRENT> 991
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (4014)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 15604
<NET-ASSETS> 472787
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 25361
<OTHER-INCOME> 0
<EXPENSES-NET> 3649
<NET-INVESTMENT-INCOME> 21712
<REALIZED-GAINS-CURRENT> 1183
<APPREC-INCREASE-CURRENT> 6804
<NET-CHANGE-FROM-OPS> 29699
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 13
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 66
<NUMBER-OF-SHARES-REDEEMED> (5)
<SHARES-REINVESTED> 1
<NET-CHANGE-IN-ASSETS> 23795
<ACCUMULATED-NII-PRIOR> 1015
<ACCUMULATED-GAINS-PRIOR> (5198)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2018
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3649
<AVERAGE-NET-ASSETS> 260
<PER-SHARE-NAV-BEGIN> 10.59
<PER-SHARE-NII> 0.53
<PER-SHARE-GAIN-APPREC> 0.19
<PER-SHARE-DIVIDEND> (0.53)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.78
<EXPENSE-RATIO> 0.59
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the Form
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.
</LEGEND>
<SERIES>
<NUMBER> 021
<NAME> NUVEEN INSURED MUNI BOND FUND- CLASS A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1998
<PERIOD-START> MAY-1-1997
<PERIOD-END> APR-30-1998
<INVESTMENTS-AT-COST> 755378
<INVESTMENTS-AT-VALUE> 816355
<RECEIVABLES> 16148
<ASSETS-OTHER> 8221
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 840724
<PAYABLE-FOR-SECURITIES> 7214
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2953
<TOTAL-LIABILITIES> 10167
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 767209
<SHARES-COMMON-STOCK> 8203
<SHARES-COMMON-PRIOR> 6498
<ACCUMULATED-NII-CURRENT> 320
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 2051
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 60977
<NET-ASSETS> 830557
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 47569
<OTHER-INCOME> 0
<EXPENSES-NET> 5650
<NET-INVESTMENT-INCOME> 41919
<REALIZED-GAINS-CURRENT> 6786
<APPREC-INCREASE-CURRENT> 23049
<NET-CHANGE-FROM-OPS> 71754
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 3941
<DISTRIBUTIONS-OF-GAINS> 249
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2354
<NUMBER-OF-SHARES-REDEEMED> (892)
<SHARES-REINVESTED> 243
<NET-CHANGE-IN-ASSETS> 40540
<ACCUMULATED-NII-PRIOR> 526
<ACCUMULATED-GAINS-PRIOR> (2170)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3921
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5650
<AVERAGE-NET-ASSETS> 79951
<PER-SHARE-NAV-BEGIN> 10.66
<PER-SHARE-NII> .54
<PER-SHARE-GAIN-APPREC> .41
<PER-SHARE-DIVIDEND> (.55)
<PER-SHARE-DISTRIBUTIONS> (.03)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.03
<EXPENSE-RATIO> .86
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the Form
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.
</LEGEND>
<SERIES>
<NUMBER> 022
<NAME> NUVEEN INSURED MUNI BOND FUND- CLASS B
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1998
<PERIOD-START> MAY-1-1997
<PERIOD-END> APR-30-1998
<INVESTMENTS-AT-COST> 755378
<INVESTMENTS-AT-VALUE> 816355
<RECEIVABLES> 16148
<ASSETS-OTHER> 8221
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 840724
<PAYABLE-FOR-SECURITIES> 7214
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2953
<TOTAL-LIABILITIES> 10167
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 767209
<SHARES-COMMON-STOCK> 453
<SHARES-COMMON-PRIOR> 46
<ACCUMULATED-NII-CURRENT> 320
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 2051
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 60977
<NET-ASSETS> 830557
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 47569
<OTHER-INCOME> 0
<EXPENSES-NET> 5650
<NET-INVESTMENT-INCOME> 41919
<REALIZED-GAINS-CURRENT> 6786
<APPREC-INCREASE-CURRENT> 23049
<NET-CHANGE-FROM-OPS> 71754
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 103
<DISTRIBUTIONS-OF-GAINS> 7
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 408
<NUMBER-OF-SHARES-REDEEMED> (6)
<SHARES-REINVESTED> 5
<NET-CHANGE-IN-ASSETS> 40540
<ACCUMULATED-NII-PRIOR> 526
<ACCUMULATED-GAINS-PRIOR> (2170)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3921
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5650
<AVERAGE-NET-ASSETS> 2534
<PER-SHARE-NAV-BEGIN> 10.67
<PER-SHARE-NII> .46
<PER-SHARE-GAIN-APPREC> .39
<PER-SHARE-DIVIDEND> (.46)
<PER-SHARE-DISTRIBUTIONS> (.03)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.03
<EXPENSE-RATIO> 1.61
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the Form
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.
</LEGEND>
<SERIES>
<NUMBER> 023
<NAME> NUVEEN INSURED MUNI BOND FUND- CLASS C
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1998
<PERIOD-START> MAY-1-1997
<PERIOD-END> APR-30-1998
<INVESTMENTS-AT-COST> 755378
<INVESTMENTS-AT-VALUE> 816355
<RECEIVABLES> 16148
<ASSETS-OTHER> 8221
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 840724
<PAYABLE-FOR-SECURITIES> 7214
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2953
<TOTAL-LIABILITIES> 10167
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 767209
<SHARES-COMMON-STOCK> 736
<SHARES-COMMON-PRIOR> 532
<ACCUMULATED-NII-CURRENT> 320
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 2051
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 60977
<NET-ASSETS> 830557
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 47569
<OTHER-INCOME> 0
<EXPENSES-NET> 5650
<NET-INVESTMENT-INCOME> 41919
<REALIZED-GAINS-CURRENT> 6786
<APPREC-INCREASE-CURRENT> 23049
<NET-CHANGE-FROM-OPS> 71754
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 295
<DISTRIBUTIONS-OF-GAINS> 21
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 312
<NUMBER-OF-SHARES-REDEEMED> (129)
<SHARES-REINVESTED> 22
<NET-CHANGE-IN-ASSETS> 40540
<ACCUMULATED-NII-PRIOR> 526
<ACCUMULATED-GAINS-PRIOR> (2170)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3921
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5650
<AVERAGE-NET-ASSETS> 6739
<PER-SHARE-NAV-BEGIN> 10.56
<PER-SHARE-NII> .48
<PER-SHARE-GAIN-APPREC> .39
<PER-SHARE-DIVIDEND> (.48)
<PER-SHARE-DISTRIBUTIONS> (.03)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.92
<EXPENSE-RATIO> 1.41
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the Form
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.
</LEGEND>
<SERIES>
<NUMBER> 024
<NAME> NUVEEN INSURED MUNI BOND FUND- CLASS R
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1998
<PERIOD-START> MAY-1-1997
<PERIOD-END> APR-30-1998
<INVESTMENTS-AT-COST> 755378
<INVESTMENTS-AT-VALUE> 816355
<RECEIVABLES> 16148
<ASSETS-OTHER> 8221
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 840724
<PAYABLE-FOR-SECURITIES> 7214
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2953
<TOTAL-LIABILITIES> 10167
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 767209
<SHARES-COMMON-STOCK> 66189
<SHARES-COMMON-PRIOR> 67284
<ACCUMULATED-NII-CURRENT> 320
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 2051
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 60977
<NET-ASSETS> 830557
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 47569
<OTHER-INCOME> 0
<EXPENSES-NET> 5650
<NET-INVESTMENT-INCOME> 41919
<REALIZED-GAINS-CURRENT> 6786
<APPREC-INCREASE-CURRENT> 23049
<NET-CHANGE-FROM-OPS> 71754
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 37786
<DISTRIBUTIONS-OF-GAINS> 2288
<DISTRIBUTIONS-OTHER> 20
<NUMBER-OF-SHARES-SOLD> 3789
<NUMBER-OF-SHARES-REDEEMED> (7358)
<SHARES-REINVESTED> 2475
<NET-CHANGE-IN-ASSETS> 40540
<ACCUMULATED-NII-PRIOR> 526
<ACCUMULATED-GAINS-PRIOR> (2170)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3921
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5650
<AVERAGE-NET-ASSETS> 734804
<PER-SHARE-NAV-BEGIN> 10.62
<PER-SHARE-NII> .56
<PER-SHARE-GAIN-APPREC> .39
<PER-SHARE-DIVIDEND> (.56)
<PER-SHARE-DISTRIBUTIONS> (.03)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.98
<EXPENSE-RATIO> .66
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.
</LEGEND>
<SERIES>
<NUMBER> 011
<NAME> NUVEEN MUNICIPAL BOND FUND CLASS A
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1998
<PERIOD-START> MAY-1-1997
<PERIOD-END> APR-30-1998
<INVESTMENTS-AT-COST> 2654721
<INVESTMENTS-AT-VALUE> 2881962
<RECEIVABLES> 63121
<ASSETS-OTHER> 625
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2945708
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 21215
<TOTAL-LIABILITIES> 21215
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2695429
<SHARES-COMMON-STOCK> 10260
<SHARES-COMMON-PRIOR> 7691
<ACCUMULATED-NII-CURRENT> 532
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1291
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 227241
<NET-ASSETS> 2924493
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 165514
<OTHER-INCOME> 0
<EXPENSES-NET> 17813
<NET-INVESTMENT-INCOME> 147701
<REALIZED-GAINS-CURRENT> 7384
<APPREC-INCREASE-CURRENT> 100807
<NET-CHANGE-FROM-OPS> 255892
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 4067
<DISTRIBUTIONS-OF-GAINS> 269
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 3610
<NUMBER-OF-SHARES-REDEEMED> (1356)
<SHARES-REINVESTED> 315
<NET-CHANGE-IN-ASSETS> 73686
<ACCUMULATED-NII-PRIOR> 1278
<ACCUMULATED-GAINS-PRIOR> 3297
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 13209
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 17813
<AVERAGE-NET-ASSETS> 84099
<PER-SHARE-NAV-BEGIN> 9.14
<PER-SHARE-NII> .46
<PER-SHARE-GAIN-APPREC> .35
<PER-SHARE-DIVIDEND> (.46)
<PER-SHARE-DISTRIBUTIONS> (.03)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.46
<EXPENSE-RATIO> .80
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.
</LEGEND>
<SERIES>
<NUMBER> 012
<NAME> NUVEEN MUNICIPAL BOND FUND CLASS B
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1998
<PERIOD-START> MAY-1-1997
<PERIOD-END> APR-30-1998
<INVESTMENTS-AT-COST> 2654721
<INVESTMENTS-AT-VALUE> 2881962
<RECEIVABLES> 63121
<ASSETS-OTHER> 625
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2945708
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 21215
<TOTAL-LIABILITIES> 21215
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2695429
<SHARES-COMMON-STOCK> 437
<SHARES-COMMON-PRIOR> 51
<ACCUMULATED-NII-CURRENT> 532
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1291
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 227241
<NET-ASSETS> 2924493
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 165514
<OTHER-INCOME> 0
<EXPENSES-NET> 17813
<NET-INVESTMENT-INCOME> 147701
<REALIZED-GAINS-CURRENT> 7384
<APPREC-INCREASE-CURRENT> 100807
<NET-CHANGE-FROM-OPS> 255892
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 86
<DISTRIBUTIONS-OF-GAINS> 7
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 426
<NUMBER-OF-SHARES-REDEEMED> (45)
<SHARES-REINVESTED> 6
<NET-CHANGE-IN-ASSETS> 73686
<ACCUMULATED-NII-PRIOR> 1278
<ACCUMULATED-GAINS-PRIOR> 3297
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<OVERDIST-NET-GAINS-PRIOR> 0
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<GROSS-EXPENSE> 17813
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<PER-SHARE-NAV-BEGIN> 9.15
<PER-SHARE-NII> .38
<PER-SHARE-GAIN-APPREC> .35
<PER-SHARE-DIVIDEND> (.39)
<PER-SHARE-DISTRIBUTIONS> (.03)
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<PER-SHARE-NAV-END> 9.46
<EXPENSE-RATIO> 1.56
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.
</LEGEND>
<SERIES>
<NUMBER> 013
<NAME> NUVEEN MUNICIPAL BOND FUND CLASS C
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1998
<PERIOD-START> MAY-1-1997
<PERIOD-END> APR-30-1998
<INVESTMENTS-AT-COST> 2654721
<INVESTMENTS-AT-VALUE> 2881962
<RECEIVABLES> 63121
<ASSETS-OTHER> 625
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2945708
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 21215
<TOTAL-LIABILITIES> 21215
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2695429
<SHARES-COMMON-STOCK> 517
<SHARES-COMMON-PRIOR> 587
<ACCUMULATED-NII-CURRENT> 532
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1291
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 227241
<NET-ASSETS> 2924493
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 165514
<OTHER-INCOME> 0
<EXPENSES-NET> 17813
<NET-INVESTMENT-INCOME> 147701
<REALIZED-GAINS-CURRENT> 7384
<APPREC-INCREASE-CURRENT> 100807
<NET-CHANGE-FROM-OPS> 255892
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 205
<DISTRIBUTIONS-OF-GAINS> 15
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 198
<NUMBER-OF-SHARES-REDEEMED> (286)
<SHARES-REINVESTED> 18
<NET-CHANGE-IN-ASSETS> 73686
<ACCUMULATED-NII-PRIOR> 1278
<ACCUMULATED-GAINS-PRIOR> 3297
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 13209
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 17813
<AVERAGE-NET-ASSETS> 4690
<PER-SHARE-NAV-BEGIN> 9.14
<PER-SHARE-NII> .40
<PER-SHARE-GAIN-APPREC> .34
<PER-SHARE-DIVIDEND> (.41)
<PER-SHARE-DISTRIBUTIONS> (.03)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.44
<EXPENSE-RATIO> 1.35
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.
</LEGEND>
<SERIES>
<NUMBER> 014
<NAME> NUVEEN MUNICIPAL BOND FUND CLASS R
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1998
<PERIOD-START> MAY-1-1997
<PERIOD-END> APR-30-1998
<INVESTMENTS-AT-COST> 2654721
<INVESTMENTS-AT-VALUE> 2881962
<RECEIVABLES> 63121
<ASSETS-OTHER> 625
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2945708
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 21215
<TOTAL-LIABILITIES> 21215
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2695429
<SHARES-COMMON-STOCK> 297869
<SHARES-COMMON-PRIOR> 303310
<ACCUMULATED-NII-CURRENT> 532
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1291
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 227241
<NET-ASSETS> 2924493
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 165514
<OTHER-INCOME> 0
<EXPENSES-NET> 17813
<NET-INVESTMENT-INCOME> 147701
<REALIZED-GAINS-CURRENT> 7384
<APPREC-INCREASE-CURRENT> 100807
<NET-CHANGE-FROM-OPS> 255892
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 144088
<DISTRIBUTIONS-OF-GAINS> 9100
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 15748
<NUMBER-OF-SHARES-REDEEMED> (33957)
<SHARES-REINVESTED> 12768
<NET-CHANGE-IN-ASSETS> 73686
<ACCUMULATED-NII-PRIOR> 1278
<ACCUMULATED-GAINS-PRIOR> 3297
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
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<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 17813
<AVERAGE-NET-ASSETS> 2843655
<PER-SHARE-NAV-BEGIN> 9.15
<PER-SHARE-NII> .48
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<PER-SHARE-DIVIDEND> (.48)
<PER-SHARE-DISTRIBUTIONS> (.03)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.46
<EXPENSE-RATIO> .60
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
