DEWEY, Melvil Dewey decimal classification and relative index / devised by Melvi Dewey and edited by Joan S. Mitchell - 21st ed - Dublin OCLC online computer library center, Inc. 1996 - 4vols. (lxix, 625; xix, 1200; vii,1005; vii,1207p.) v.1 manual table- (132016); v.2. Shedules 000-599(132017); v.3 Shedules 600-999- (132018); v.4 Relative index, manual- (132019) ISBN: 9106085049 Subjects--Topical Terms: Dewey Decimal classificationLibrary classification Dewey Class. No.: 25.431 / DEW