VANGUARD MUNICIPAL BOND FUND INC
NSAR-B, 1997-10-21
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<PAGE>      PAGE  1
000 B000000 08/31/97
000 C000000 0000225997
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 U
001 A000000 VANGUARD MUNICIPAL BOND FUND, INC.
001 B000000 811-2687
001 C000000 6106691000
002 A000000 100 VANGUARD BOULEVARD
002 B000000 MALVERN
002 C000000 PA
002 D010000 19355
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  7
007 C010100  1
007 C020100 SHORT-TERM PORTFOLIO
007 C030100 N
007 C010200  2
007 C020200 INTERMEDIATE-TERM PORTFOLIO
007 C030200 N
007 C010300  3
007 C020300 LONG-TERM PORTFOLIO
007 C030300 N
007 C010400  4
007 C020400 HIGH YIELD PORTFOLIO
007 C030400 N
007 C010500  5
007 C020500 MONEY MARKET PORTFOLIO
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007 C010600  6
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014 A00AA01 VANGUARD MARKETING CORPORATION
014 B00AA01 8-21570
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<PAGE>      PAGE  2
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022 A000003 MERRILL LYNCH PIERCE FENNER & SMITH
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022 A000004 SMITH BARNEY INC.
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022 A000005 MONEY MARKET PORTFOLIO/VANGUARD MUNICIPAL BD
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022 C000005   1029370
022 D000005   1196772
022 A000006 J.P. MORGAN SECURITIES INC.
022 B000006 13-3224016
022 C000006   1378499
022 D000006    599299
022 A000007 BEAR STEARNS & CO.
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022 C000007   1270934
022 D000007    512282
022 A000008 MORGAN STANLEY & CO., INC.
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022 C000008   1001395
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<PAGE>      PAGE  3
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<PAGE>      PAGE  4
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<PAGE>      PAGE  5
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<PAGE>      PAGE  6
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<PAGE>      PAGE  7
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<PAGE>      PAGE  8
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<PAGE>      PAGE  9
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<PAGE>      PAGE  11
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<PAGE>      PAGE  12
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<PAGE>      PAGE  14
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<PAGE>      PAGE  16
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<PAGE>      PAGE  18
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SIGNATURE   GARY P. SOURA                                
TITLE       MANAGER             
 


<TABLE> <S> <C>

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</TABLE>

<TABLE> <S> <C>

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</TABLE>

<TABLE> <S> <C>

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</TABLE>

<TABLE> <S> <C>

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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000225997
<NAME> VANGUARD MUNICIPAL BOND FUND, INC.
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</TABLE>

<TABLE> <S> <C>

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</TABLE>

<TABLE> <S> <C>

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<CIK> 0000225997
<NAME> VANGUARD MUNICIPAL BOND FUND, INC.
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