<PAGE> PAGE 1
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007 C020200 THE DFA ONE-YEAR FIXED INCOME PORTFOLIO
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007 C010400 4
007 C020400 THE JAPANESE SMALL COMPANY PORTFOLIO
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<PAGE> PAGE 2
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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 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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<PAGE> PAGE 20
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010 B000501 801-162830
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<PAGE> PAGE 21
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<PAGE> PAGE 22
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<PAGE> PAGE 23
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<PAGE> PAGE 24
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<PAGE> PAGE 25
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<PAGE> PAGE 26
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<PAGE> PAGE 27
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<PAGE> PAGE 28
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<PAGE> PAGE 29
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<PAGE> PAGE 30
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<PAGE> PAGE 31
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<PAGE> PAGE 32
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010 A000901 DIMENSIONAL FUND ADVISORS INC.
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010 C010901 SANTA MONICA
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<PAGE> PAGE 33
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<PAGE> PAGE 34
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<PAGE> PAGE 35
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<PAGE> PAGE 36
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008 A001001 DIMENSIONAL FUND ADVISORS INC.
008 B001001 A
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<PAGE> PAGE 37
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<PAGE> PAGE 38
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<PAGE> PAGE 39
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<PAGE> PAGE 40
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<PAGE> PAGE 41
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<PAGE> PAGE 42
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<PAGE> PAGE 43
068 B001100 Y
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<PAGE> PAGE 44
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<PAGE> PAGE 45
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010 B001201 801-162830
010 C011201 SANTA MONICA
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<PAGE> PAGE 46
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<PAGE> PAGE 47
068 B001200 Y
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<PAGE> PAGE 48
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<PAGE> PAGE 49
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008 B001301 A
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<PAGE> PAGE 50
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<PAGE> PAGE 51
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<PAGE> PAGE 52
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<PAGE> PAGE 53
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010 A001401 DIMENSIONAL FUND ADVISORS INC.
010 B001401 801-162830
010 C011401 SANTA MONICA
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<PAGE> PAGE 54
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<PAGE> PAGE 55
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<PAGE> PAGE 56
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<PAGE> PAGE 57
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008 A001501 DIMENSIONAL FUND ADVISORS INC.
008 B001501 A
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008 D011501 SANTA MONICA
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010 A001501 PFPC, INC.
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<PAGE> PAGE 58
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<PAGE> PAGE 59
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<PAGE> PAGE 60
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<PAGE> PAGE 61
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<PAGE> PAGE 62
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<PAGE> PAGE 63
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<PAGE> PAGE 64
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<PAGE> PAGE 65
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<PAGE> PAGE 66
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<PAGE> PAGE 67
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<PAGE> PAGE 68
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<PAGE> PAGE 69
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<PAGE> PAGE 70
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<PAGE> PAGE 71
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<PAGE> PAGE 72
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<PAGE> PAGE 73
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<PAGE> PAGE 74
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010 C011901 SANTA MONICA
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<PAGE> PAGE 75
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<PAGE> PAGE 76
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<PAGE> PAGE 77
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<PAGE> PAGE 78
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<PAGE> PAGE 79
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<PAGE> PAGE 80
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<PAGE> PAGE 81
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<PAGE> PAGE 82
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008 B002101 A
008 C002101 801-162830
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<PAGE> PAGE 83
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<PAGE> PAGE 84
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<PAGE> PAGE 85
070 L022100 N
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<PAGE> PAGE 86
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008 B002201 A
008 C002201 801-162830
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<PAGE> PAGE 87
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<PAGE> PAGE 88
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<PAGE> PAGE 89
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<PAGE> PAGE 90
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<PAGE> PAGE 91
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<PAGE> PAGE 92
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<PAGE> PAGE 93
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<PAGE> PAGE 94
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<PAGE> PAGE 95
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<PAGE> PAGE 96
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<PAGE> PAGE 97
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<PAGE> PAGE 98
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<PAGE> PAGE 99
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<PAGE> PAGE 100
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<PAGE> PAGE 101
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<PAGE> PAGE 102
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<PAGE> PAGE 103
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<PAGE> PAGE 104
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<PAGE> PAGE 105
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<PAGE> PAGE 106
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<PAGE> PAGE 107
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<PAGE> PAGE 108
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<PAGE> PAGE 109
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<PAGE> PAGE 110
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<PAGE> PAGE 111
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<PAGE> PAGE 112
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<PAGE> PAGE 113
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<PAGE> PAGE 114
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<PAGE> PAGE 115
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<PAGE> PAGE 116
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010 A003101 DIMENSIONAL FUND ADVISORS INC.
010 B003101 801-162830
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<PAGE> PAGE 117
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<PAGE> PAGE 118
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<PAGE> PAGE 119
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<PAGE> PAGE 120
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<PAGE> PAGE 121
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<PAGE> PAGE 122
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<PAGE> PAGE 123
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<PAGE> PAGE 124
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<PAGE> PAGE 125
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<PAGE> PAGE 126
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<PAGE> PAGE 127
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<PAGE> PAGE 128
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<PAGE> PAGE 129
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<PAGE> PAGE 130
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<PAGE> PAGE 131
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<PAGE> PAGE 132
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<PAGE> PAGE 133
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<PAGE> PAGE 134
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<PAGE> PAGE 135
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<PAGE> PAGE 136
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<PAGE> PAGE 137
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<PAGE> PAGE 138
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<PAGE> PAGE 139
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SIGNATURE MARY JANE MALONEY
TITLE MANAGER
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<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> .02
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<PER-SHARE-NAV-END> 1.39
<EXPENSE-RATIO> .72
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000355437
<NAME> DFA INVESTMENT DIMENSIONS GROUP INC.
<SERIES>
<NUMBER> 37
<NAME> TAX MANAGED U.S. 6-10 SMALL COMPANY PORTFOLIO
<S> <C>
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<ACCUMULATED-NET-GAINS> (4030)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 2883533
<NET-ASSETS> 35843509
<DIVIDEND-INCOME> 64065
<INTEREST-INCOME> 48760
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<EXPENSES-NET> (97928)
<NET-INVESTMENT-INCOME> 21975
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000355437
<NAME> DFA INVESTMENT DIMENSIONS GROUP INC.
<SERIES>
<NUMBER> 38
<NAME> TAX MANAGED DFA INTERNATIONAL VALUE PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
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<PERIOD-END> MAY-31-1999
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<INVESTMENTS-AT-VALUE> 17299504
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<TOTAL-ASSETS> 17521549
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<OTHER-ITEMS-LIABILITIES> 22317
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<PAID-IN-CAPITAL-COMMON> 13094173
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<ACCUMULATED-NII-CURRENT> 52491
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<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (592198)
<NET-ASSETS> 12553993
<DIVIDEND-INCOME> 62200
<INTEREST-INCOME> 13646
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<EXPENSES-NET> (23355)
<NET-INVESTMENT-INCOME> 52491
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</TABLE>
EXHIBIT INDEX
Exhibit A: Attachment to item 77I:
Terms of new or amended securities
Exhibit B: Attachment to item 77Q1:
Exhibits
- -----------------------------------------------------------------
Exhibit A:
Filed on Form N1-A January 22, 1999-PEA#:50/51 - Prospectus dated
March 30, 1999 - Tax-Managed U.S. Marketwide Value Portfolio; Tax-
Managed U.S. Marketwide 5-10 Value Portfolio; Tax-Managed U.S. 6-10
Small Company Portfolio; and Tax-Managed DFA International Value
Portfolio.
Exhibit B:
Pages 23-31 are from the DFA Investment Dimensions Group Inc. prospectus,
Dated March 30, 1999. Filed on Form N1-A on March 27, 1999;
Past-PEA#53/54
