025.3 Wyl I Wylmar, Bohdan S Introduction to cataloging and classification / Bohdan S. Wynar ; with the assinstance of Arlene Taylor Dowell and Jeanne Osborn. -- 6. ed. --Littleton, Colo. : Libraries Unilimited, 1980. xvii, 657 p. ; 24 cm ''Bibliogrphy'': p. 641 Incluye indice ISBN 0-87287-220-3