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Batty, C.D.: ¬An introduction to the eighteenth edition of the Dewey Decimal Classification (1971)
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Batty, C.D.: ¬An introduction to the seventeenth edition of the Dewey Decimal Classification (1967)
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Batty, C.D.: ¬An introduction to Colon Classification : a programmed text (1966)
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Batty, C.D.: Introduction to the nineteenth edition of the Dewey Decimal Classification (1981)
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