<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> 012
<NAME> NUVEEN INCOME FUND - CLASS B
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> SEP-30-2000
<INVESTMENTS-AT-COST> 23546
<INVESTMENTS-AT-VALUE> 23565
<RECEIVABLES> 374
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 23939
<PAYABLE-FOR-SECURITIES> 4348
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1412
<TOTAL-LIABILITIES> 5760
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 19121
<SHARES-COMMON-STOCK> 318
<SHARES-COMMON-PRIOR> 216
<ACCUMULATED-NII-CURRENT> 62
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (1022)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 18
<NET-ASSETS> 18179
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 1324
<OTHER-INCOME> 0
<EXPENSES-NET> 199
<NET-INVESTMENT-INCOME> 1125
<REALIZED-GAINS-CURRENT> (861)
<APPREC-INCREASE-CURRENT> 508
<NET-CHANGE-FROM-OPS> 772
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 280
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 174
<NUMBER-OF-SHARES-REDEEMED> 75
<SHARES-REINVESTED> 3
<NET-CHANGE-IN-ASSETS> 1954
<ACCUMULATED-NII-PRIOR> 27
<ACCUMULATED-GAINS-PRIOR> (162)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 102
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 369
<AVERAGE-NET-ASSETS> 4874
<PER-SHARE-NAV-BEGIN> 19.00
<PER-SHARE-NII> 1.11
<PER-SHARE-GAIN-APPREC> (.38)
<PER-SHARE-DIVIDEND> (1.07)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 18.66
<EXPENSE-RATIO> 1.80
</TABLE>
