Dewey, Melvil
DDC 21 (Dewey Decimal Classification Edition 21) : Volume 2 Schedules 000-599
Forest Press, 1996
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Dewey, Melvil
DDC 21 (Dewey Decimal Classification Edition 21) : Volume 4 Relative Index. Manual
New York : Forest Press, 1996,
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Sifton, Pat
Workbook for DDC 20 : Dewey Decimal Classification Edition 20
Canadian Library Association, 1989
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Dewey, Melvil
Dewey Decimal Classification and relative index : edition 19, volume 2 schedules
Forest Press, 1979
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Satija, Mohinder Partap, 1949-
Introduction to the practice of Dewey Decimal Classification
Oriental University Press , 1987
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