Dewey Melvil. (1971). Decimal Classification and Relative Index vol. ii schedules (18th.). Forest press Inc.
Chicago-viite (17. p.)Dewey Melvil. Decimal Classification and Relative Index Vol. Ii Schedules. 18th. New York: Forest press Inc, 1971.
MLA-viite (9. p.)Dewey Melvil. Decimal Classification and Relative Index Vol. Ii Schedules. 18th. Forest press Inc, 1971.
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