International rules for the cataloguing of educational scientific and cultural films and filmstrips on 3" x 5" (7.5 cm. x 12.5 cm.) cards. - United Nations Educational Scientific and Cultural Organization. Dept. of Mass Communications (Paris [Clearing House, Dept of Mass Communications, UNESCO], 1956)
[United Nations Educational, Scientific and Cultural Organization. Document] MC/CA/17A
Keywords: Cataloging of filmstrips; Cataloging of moving-pictures.