Dewey decimal classification and relative index : vol. 3. Relative index / devised by Melvil Dewey ; Benjamin A. Custer Dewey, Melvil, 1851-1931. Custer, Benjamin A. (Benjamin Allen), 1912- Classification, Dewey decimal. Z696 .D519 1979 025.431 DED 19 First published anonymously in 1876 under title: A classification and subject index. 2d ed. published under title: Decimal classification and relativ index. Albany : Forest Press, 1979. 1979. 1979 Text 3 v. ; eng