Croghan, Antony. A thesaurus-classification for non-book media. - London : A. Croghan, 17 Coburgh Mansions, Handel St., 1970. ISBN: 22/- a13.1..1.7 LCCN: 77487828 //r89 Nat. Bib. No.: B70-07981 Subjects--Topical Terms: Cataloging of nonbook materials. LC Class. No.: Z695.66 / .C76 Dewey Class. No.: 025.4/6/001553