Comaroni, J.P.; Satija, M.P.: Exercises in the 20th edition of the Dewey Decimal Classification (1990)
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- LCSH
- Classification, Dewey decimal / Problems, exercises, etc
- Subject
- Classification, Dewey decimal / Problems, exercises, etc
Davis, S.W.: DDC 20 workbook : a practical introduction to the Dewey Decimal Classification (1992)
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- LCSH
- Classification, Dewey decimal / Problems, exercises, etc
- Subject
- Classification, Dewey decimal / Problems, exercises, etc
