Dewey decimal classification and relative index : vol. 3 Schedules 600-999 / Devised by Melvil Dewey ; edited by Joan S. Mitchell ... [et al.] . Dewey, Melvil, 1851-1931. Mitchell, Joan S. editor in chief Clasification, Deway decimal Classification, Dewey Decimal. Z696 .D52 2011 23 025.431 DED New York : OCLC Online Computer Library Center, 1996. 1996. 1996 Text 4 v. ; eng