<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>