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<PAGE> PAGE 7
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<PAGE> PAGE 10
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<PAGE> PAGE 11
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<PAGE> PAGE 12
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<PAGE> PAGE 13
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<PAGE> PAGE 14
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<PAGE> PAGE 15
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<PAGE> PAGE 16
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<PAGE> PAGE 17
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<PAGE> PAGE 18
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<PAGE> PAGE 19
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012 A000501 CHASE MANHATTAN BANK
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<PAGE> PAGE 21
012 C010501 NEW YORK
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<PAGE> PAGE 22
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051 000500 N
052 000500 N
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<PAGE> PAGE 23
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<PAGE> PAGE 24
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SIGNATURE STEPHEN D. FOY
TITLE V.P.& CONTROLLER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the Form
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</LEGEND>
<SERIES>
<NUMBER> 021
<NAME> NUVEEN INSURED MUNICIPAL BOND FUND - CLASS A
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<S> <C>
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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 MUNICIPAL BOND FUND - CLASS B
<MULTIPLIER> 1000
<S> <C>
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<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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 MUNICIPAL BOND FUND - CLASS C
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
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<NET-ASSETS> 860761
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<SHARES-REINVESTED> 25
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<PER-SHARE-NAV-END> 11.05
<EXPENSE-RATIO> 1.36
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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 MUNICIPAL BOND FUND - CLASS R
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
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<ACCUMULATED-NET-GAINS> 1499
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<ACCUM-APPREC-OR-DEPREC> 70894
<NET-ASSETS> 860761
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<NET-CHANGE-IN-ASSETS> 30205
<ACCUMULATED-NII-PRIOR> 320
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<OVERDIST-NET-GAINS-PRIOR> 0
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<PER-SHARE-NAV-END> 11.11
<EXPENSE-RATIO> .62
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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> 031
<NAME> NUVEEN FLAGSHIP ALL-AMERICAN MUNI BOND FUND - CLASS A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
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<NET-CHANGE-IN-ASSETS> 114572
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<EXPENSE-RATIO> .80
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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> 032
<NAME> NUVEEN FLAGSHIP ALL-AMERICAN MUNI BOND FUND - CLASS B
<MULTIPLIER> 1000
<S> <C>
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<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
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<INVESTMENTS-AT-VALUE> 419265
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<PAID-IN-CAPITAL-COMMON> 399384
<SHARES-COMMON-STOCK> 2780
<SHARES-COMMON-PRIOR> 769
<ACCUMULATED-NII-CURRENT> 1
<OVERDISTRIBUTION-NII> 0
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<OVERDISTRIBUTION-GAINS> 0
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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> 033
<NAME> NUVEEN FLAGSHIP ALL-AMERICAN MUNI BOND FUND - CLASS C
<MULTIPLIER> 1000
<S> <C>
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<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
<INVESTMENTS-AT-COST> 392943
<INVESTMENTS-AT-VALUE> 419265
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<PAYABLE-FOR-SECURITIES> 4594
<SENIOR-LONG-TERM-DEBT> 0
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<TOTAL-LIABILITIES> 6292
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 399384
<SHARES-COMMON-STOCK> 7010
<SHARES-COMMON-PRIOR> 5512
<ACCUMULATED-NII-CURRENT> 1
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1109
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 26322
<NET-ASSETS> 426816
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<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2459
<NUMBER-OF-SHARES-REDEEMED> 1050
<SHARES-REINVESTED> 90
<NET-CHANGE-IN-ASSETS> 114572
<ACCUMULATED-NII-PRIOR> 3
<ACCUMULATED-GAINS-PRIOR> 39
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1788
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3501
<AVERAGE-NET-ASSETS> 71763
<PER-SHARE-NAV-BEGIN> 11.31
<PER-SHARE-NII> .51
<PER-SHARE-GAIN-APPREC> .12
<PER-SHARE-DIVIDEND> (.51)
<PER-SHARE-DISTRIBUTIONS> (.01)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.42
<EXPENSE-RATIO> 1.35
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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> 034
<NAME> NUVEEN FLAGSHIP ALL-AMERICAN MUNI BOND FUND - CLASS R
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
<INVESTMENTS-AT-COST> 392943
<INVESTMENTS-AT-VALUE> 419265
<RECEIVABLES> 13581
<ASSETS-OTHER> 262
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 433108
<PAYABLE-FOR-SECURITIES> 4594
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1698
<TOTAL-LIABILITIES> 6292
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 399384
<SHARES-COMMON-STOCK> 239
<SHARES-COMMON-PRIOR> 398
<ACCUMULATED-NII-CURRENT> 1
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1109
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 26322
<NET-ASSETS> 426816
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 21210
<OTHER-INCOME> 0
<EXPENSES-NET> 3467
<NET-INVESTMENT-INCOME> 17743
<REALIZED-GAINS-CURRENT> 1390
<APPREC-INCREASE-CURRENT> 1381
<NET-CHANGE-FROM-OPS> 20514
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 225
<DISTRIBUTIONS-OF-GAINS> 5
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 179
<NUMBER-OF-SHARES-REDEEMED> 356
<SHARES-REINVESTED> 19
<NET-CHANGE-IN-ASSETS> 114572
<ACCUMULATED-NII-PRIOR> 3
<ACCUMULATED-GAINS-PRIOR> 39
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1788
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3501
<AVERAGE-NET-ASSETS> 4353
<PER-SHARE-NAV-BEGIN> 11.32
<PER-SHARE-NII> .60
<PER-SHARE-GAIN-APPREC> .13
<PER-SHARE-DIVIDEND> (.60)
<PER-SHARE-DISTRIBUTIONS> (.01)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.44
<EXPENSE-RATIO> .61
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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> NUVEEN FLAGSHIP LIMITED TERM MUNICIPAL BOND FUND CLASS A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
<INVESTMENTS-AT-COST> 518811
<INVESTMENTS-AT-VALUE> 538459
<RECEIVABLES> 12673
<ASSETS-OTHER> 2
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 551134
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 5746
<TOTAL-LIABILITIES> 5746
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 529317
<SHARES-COMMON-STOCK> 41900
<SHARES-COMMON-PRIOR> 40573
<ACCUMULATED-NII-CURRENT> 225
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (3802)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 19648
<NET-ASSETS> 545388
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 26414
<OTHER-INCOME> 0
<EXPENSES-NET> 4100
<NET-INVESTMENT-INCOME> 22314
<REALIZED-GAINS-CURRENT> 178
<APPREC-INCREASE-CURRENT> 4044
<NET-CHANGE-FROM-OPS> 26536
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 20628
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 8691
<NUMBER-OF-SHARES-REDEEMED> 8242
<SHARES-REINVESTED> 879
<NET-CHANGE-IN-ASSETS> 72601
<ACCUMULATED-NII-PRIOR> 991
<ACCUMULATED-GAINS-PRIOR> (4014)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2194
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 4100
<AVERAGE-NET-ASSETS> 447511
<PER-SHARE-NAV-BEGIN> 10.80
<PER-SHARE-NII> 0.49
<PER-SHARE-GAIN-APPREC> 0.10
<PER-SHARE-DIVIDEND> (0.50)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.89
<EXPENSE-RATIO> .77
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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> 044
<NAME> NUVEEN FLAGSHIP LIMITED TERM MUNICIPAL BOND FUND CLASS R
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
<INVESTMENTS-AT-COST> 518811
<INVESTMENTS-AT-VALUE> 538459
<RECEIVABLES> 12673
<ASSETS-OTHER> 2
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 551134
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 5746
<TOTAL-LIABILITIES> 5746
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 529317
<SHARES-COMMON-STOCK> 108
<SHARES-COMMON-PRIOR> 65
<ACCUMULATED-NII-CURRENT> 225
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (3802)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 19648
<NET-ASSETS> 545388
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 26414
<OTHER-INCOME> 0
<EXPENSES-NET> 4100
<NET-INVESTMENT-INCOME> 22314
<REALIZED-GAINS-CURRENT> 178
<APPREC-INCREASE-CURRENT> 4044
<NET-CHANGE-FROM-OPS> 26536
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 46
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 97
<NUMBER-OF-SHARES-REDEEMED> 56
<SHARES-REINVESTED> 2
<NET-CHANGE-IN-ASSETS> 72601
<ACCUMULATED-NII-PRIOR> 991
<ACCUMULATED-GAINS-PRIOR> (4014)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2194
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 4100
<AVERAGE-NET-ASSETS> 971
<PER-SHARE-NAV-BEGIN> 10.78
<PER-SHARE-NII> 0.51
<PER-SHARE-GAIN-APPREC> 0.11
<PER-SHARE-DIVIDEND> (0.53)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.87
<EXPENSE-RATIO> .57
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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> NUVEEN FLAGSHIP LIMITED TERM MUNICIPAL BOND FUND CLASS C
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
<INVESTMENTS-AT-COST> 518811
<INVESTMENTS-AT-VALUE> 538459
<RECEIVABLES> 12673
<ASSETS-OTHER> 2
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 551134
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 5746
<TOTAL-LIABILITIES> 5746
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 529317
<SHARES-COMMON-STOCK> 8096
<SHARES-COMMON-PRIOR> 3147
<ACCUMULATED-NII-CURRENT> 225
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (3802)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 19648
<NET-ASSETS> 545388
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 26414
<OTHER-INCOME> 0
<EXPENSES-NET> 4100
<NET-INVESTMENT-INCOME> 22314
<REALIZED-GAINS-CURRENT> 178
<APPREC-INCREASE-CURRENT> 4044
<NET-CHANGE-FROM-OPS> 26536
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 2406
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 5825
<NUMBER-OF-SHARES-REDEEMED> 978
<SHARES-REINVESTED> 102
<NET-CHANGE-IN-ASSETS> 72601
<ACCUMULATED-NII-PRIOR> 991
<ACCUMULATED-GAINS-PRIOR> (4014)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2194
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 4100
<AVERAGE-NET-ASSETS> 57241
<PER-SHARE-NAV-BEGIN> 10.79
<PER-SHARE-NII> 0.45
<PER-SHARE-GAIN-APPREC> 0.10
<PER-SHARE-DIVIDEND> (0.47)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.87
<EXPENSE-RATIO> 1.12
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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> 011
<NAME> NUVEEN MUNICIPAL BOND FUND CLASS A
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
<INVESTMENTS-AT-COST> 2659154
<INVESTMENTS-AT-VALUE> 2919419
<RECEIVABLES> 53206
<ASSETS-OTHER> 12331
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2984956
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 13246
<TOTAL-LIABILITIES> 13246
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2706655
<SHARES-COMMON-STOCK> 12579
<SHARES-COMMON-PRIOR> 10260
<ACCUMULATED-NII-CURRENT> 1260
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 3530
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 260265
<NET-ASSETS> 2971710
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 163128
<OTHER-INCOME> 0
<EXPENSES-NET> 17424
<NET-INVESTMENT-INCOME> 145704
<REALIZED-GAINS-CURRENT> 9886
<APPREC-INCREASE-CURRENT> 33024
<NET-CHANGE-FROM-OPS> 188614
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 5111
<DISTRIBUTIONS-OF-GAINS> 277
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 3885
<NUMBER-OF-SHARES-REDEEMED> 1942
<SHARES-REINVESTED> 377
<NET-CHANGE-IN-ASSETS> 47218
<ACCUMULATED-NII-PRIOR> 532
<ACCUMULATED-GAINS-PRIOR> 1291
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 13391
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 17424
<AVERAGE-NET-ASSETS> 109398
<PER-SHARE-NAV-BEGIN> 9.46
<PER-SHARE-NII> .45
<PER-SHARE-GAIN-APPREC> .13
<PER-SHARE-DIVIDEND> (.45)
<PER-SHARE-DISTRIBUTIONS> (.02)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.57
<EXPENSE-RATIO> .77
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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 MUNICIPAL BOND FUND CLASS B
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
<INVESTMENTS-AT-COST> 2659154
<INVESTMENTS-AT-VALUE> 2919419
<RECEIVABLES> 53206
<ASSETS-OTHER> 12331
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2984956
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 13246
<TOTAL-LIABILITIES> 13246
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2706655
<SHARES-COMMON-STOCK> 1054
<SHARES-COMMON-PRIOR> 437
<ACCUMULATED-NII-CURRENT> 1260
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 3530
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 260265
<NET-ASSETS> 2971710
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 163128
<OTHER-INCOME> 0
<EXPENSES-NET> 17424
<NET-INVESTMENT-INCOME> 145704
<REALIZED-GAINS-CURRENT> 9886
<APPREC-INCREASE-CURRENT> 33024
<NET-CHANGE-FROM-OPS> 188614
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 259
<DISTRIBUTIONS-OF-GAINS> 17
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 650
<NUMBER-OF-SHARES-REDEEMED> 51
<SHARES-REINVESTED> 17
<NET-CHANGE-IN-ASSETS> 47218
<ACCUMULATED-NII-PRIOR> 532
<ACCUMULATED-GAINS-PRIOR> 1291
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 13391
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 17424
<AVERAGE-NET-ASSETS> 6633
<PER-SHARE-NAV-BEGIN> 9.46
<PER-SHARE-NII> .38
<PER-SHARE-GAIN-APPREC> .13
<PER-SHARE-DIVIDEND> (.38)
<PER-SHARE-DISTRIBUTIONS> (.02)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.57
<EXPENSE-RATIO> 1.52
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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> 013
<NAME> NUVEEN MUNICIPAL BOND FUND CLASS C
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
<INVESTMENTS-AT-COST> 2659154
<INVESTMENTS-AT-VALUE> 2919419
<RECEIVABLES> 53206
<ASSETS-OTHER> 12331
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2984956
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 13246
<TOTAL-LIABILITIES> 13246
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2706655
<SHARES-COMMON-STOCK> 752
<SHARES-COMMON-PRIOR> 517
<ACCUMULATED-NII-CURRENT> 1260
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 3530
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 260265
<NET-ASSETS> 2971710
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 163128
<OTHER-INCOME> 0
<EXPENSES-NET> 17424
<NET-INVESTMENT-INCOME> 145704
<REALIZED-GAINS-CURRENT> 9886
<APPREC-INCREASE-CURRENT> 33024
<NET-CHANGE-FROM-OPS> 188614
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 250
<DISTRIBUTIONS-OF-GAINS> 16
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 358
<NUMBER-OF-SHARES-REDEEMED> 143
<SHARES-REINVESTED> 18
<NET-CHANGE-IN-ASSETS> 47218
<ACCUMULATED-NII-PRIOR> 532
<ACCUMULATED-GAINS-PRIOR> 1291
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 13391
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 17424
<AVERAGE-NET-ASSETS> 6063
<PER-SHARE-NAV-BEGIN> 9.44
<PER-SHARE-NII> .40
<PER-SHARE-GAIN-APPREC> .15
<PER-SHARE-DIVIDEND> (.40)
<PER-SHARE-DISTRIBUTIONS> (.02)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.57
<EXPENSE-RATIO> 1.32
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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> 014
<NAME> NUVEEN MUNICIPAL BOND FUND CLASS R
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
<INVESTMENTS-AT-COST> 2659154
<INVESTMENTS-AT-VALUE> 2919419
<RECEIVABLES> 53206
<ASSETS-OTHER> 12331
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2984956
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 13246
<TOTAL-LIABILITIES> 13246
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2706655
<SHARES-COMMON-STOCK> 295863
<SHARES-COMMON-PRIOR> 297869
<ACCUMULATED-NII-CURRENT> 1260
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 3530
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 260265
<NET-ASSETS> 2971710
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 163128
<OTHER-INCOME> 0
<EXPENSES-NET> 17424
<NET-INVESTMENT-INCOME> 145704
<REALIZED-GAINS-CURRENT> 9886
<APPREC-INCREASE-CURRENT> 33024
<NET-CHANGE-FROM-OPS> 188614
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 139355
<DISTRIBUTIONS-OF-GAINS> 7337
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 13266
<NUMBER-OF-SHARES-REDEEMED> 26989
<SHARES-REINVESTED> 11717
<NET-CHANGE-IN-ASSETS> 47218
<ACCUMULATED-NII-PRIOR> 532
<ACCUMULATED-GAINS-PRIOR> 1291
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 13391
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 17424
<AVERAGE-NET-ASSETS> 2855959
<PER-SHARE-NAV-BEGIN> 9.46
<PER-SHARE-NII> .47
<PER-SHARE-GAIN-APPREC> .14
<PER-SHARE-DIVIDEND> (.47)
<PER-SHARE-DISTRIBUTIONS> (.02)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.58
<EXPENSE-RATIO> .57
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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> 051
<NAME> NUVEEN FLAGSHIP INTERMEDIATE MUNI BOND FUND CLASS A
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
<INVESTMENTS-AT-COST> 59355
<INVESTMENTS-AT-VALUE> 62431
<RECEIVABLES> 1094
<ASSETS-OTHER> 1202
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 64727
<PAYABLE-FOR-SECURITIES> 777
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1614
<TOTAL-LIABILITIES> 2391
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 58249
<SHARES-COMMON-STOCK> 4705
<SHARES-COMMON-PRIOR> 3892
<ACCUMULATED-NII-CURRENT> 5
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1007
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3075
<NET-ASSETS> 62336
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 3014
<OTHER-INCOME> 0
<EXPENSES-NET> 512
<NET-INVESTMENT-INCOME> 2502
<REALIZED-GAINS-CURRENT> 975
<APPREC-INCREASE-CURRENT> (354)
<NET-CHANGE-FROM-OPS> 3123
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 2193
<DISTRIBUTIONS-OF-GAINS> 216
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1954
<NUMBER-OF-SHARES-REDEEMED> 1238
<SHARES-REINVESTED> 98
<NET-CHANGE-IN-ASSETS> 15861
<ACCUMULATED-NII-PRIOR> 11
<ACCUMULATED-GAINS-PRIOR> 143
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 284
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 593
<AVERAGE-NET-ASSETS> 49072
<PER-SHARE-NAV-BEGIN> 10.88
<PER-SHARE-NII> .49
<PER-SHARE-GAIN-APPREC> .17
<PER-SHARE-DIVIDEND> (.50)
<PER-SHARE-DISTRIBUTIONS> (.04)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.00
<EXPENSE-RATIO> .84
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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> 053
<NAME> NUVEEN FLAGSHIP INTERMEDIATE MUNI BOND FUND CLASS C
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
<INVESTMENTS-AT-COST> 59355
<INVESTMENTS-AT-VALUE> 62431
<RECEIVABLES> 1094
<ASSETS-OTHER> 1202
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 64727
<PAYABLE-FOR-SECURITIES> 777
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1614
<TOTAL-LIABILITIES> 2391
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 58249
<SHARES-COMMON-STOCK> 895
<SHARES-COMMON-PRIOR> 325
<ACCUMULATED-NII-CURRENT> 5
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1007
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3075
<NET-ASSETS> 62336
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 3014
<OTHER-INCOME> 0
<EXPENSES-NET> 512
<NET-INVESTMENT-INCOME> 2502
<REALIZED-GAINS-CURRENT> 975
<APPREC-INCREASE-CURRENT> (354)
<NET-CHANGE-FROM-OPS> 3123
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 282
<DISTRIBUTIONS-OF-GAINS> 36
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 716
<NUMBER-OF-SHARES-REDEEMED> 158
<SHARES-REINVESTED> 12
<NET-CHANGE-IN-ASSETS> 15861
<ACCUMULATED-NII-PRIOR> 11
<ACCUMULATED-GAINS-PRIOR> 143
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 284
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 593
<AVERAGE-NET-ASSETS> 7185
<PER-SHARE-NAV-BEGIN> 10.89
<PER-SHARE-NII> .43
<PER-SHARE-GAIN-APPREC> .18
<PER-SHARE-DIVIDEND> (.44)
<PER-SHARE-DISTRIBUTIONS> (.04)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.02
<EXPENSE-RATIO> 1.36
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<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> 054
<NAME> NUVEEN FLAGSHIP INTERMEDIATE MUNI BOND FUND CLASS R
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-1999
<PERIOD-START> MAY-01-1998
<PERIOD-END> APR-30-1999
<INVESTMENTS-AT-COST> 59355
<INVESTMENTS-AT-VALUE> 62431
<RECEIVABLES> 1094
<ASSETS-OTHER> 1202
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 64727
<PAYABLE-FOR-SECURITIES> 777
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1614
<TOTAL-LIABILITIES> 2391
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 58249
<SHARES-COMMON-STOCK> 64
<SHARES-COMMON-PRIOR> 55
<ACCUMULATED-NII-CURRENT> 5
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1007
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3075
<NET-ASSETS> 62336
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 3014
<OTHER-INCOME> 0
<EXPENSES-NET> 512
<NET-INVESTMENT-INCOME> 2502
<REALIZED-GAINS-CURRENT> 975
<APPREC-INCREASE-CURRENT> (354)
<NET-CHANGE-FROM-OPS> 3123
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 32
<DISTRIBUTIONS-OF-GAINS> 3
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 25
<NUMBER-OF-SHARES-REDEEMED> 17
<SHARES-REINVESTED> 1
<NET-CHANGE-IN-ASSETS> 15861
<ACCUMULATED-NII-PRIOR> 11
<ACCUMULATED-GAINS-PRIOR> 143
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 284
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 593
<AVERAGE-NET-ASSETS> 694
<PER-SHARE-NAV-BEGIN> 10.86
<PER-SHARE-NII> .52
<PER-SHARE-GAIN-APPREC> .16
<PER-SHARE-DIVIDEND> (.51)
<PER-SHARE-DISTRIBUTIONS> (.04)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.99
<EXPENSE-RATIO> .64
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
