Guides to educational media films, filmstrips, multimedia kits, programmed instruction materials, recordings on discs and tapes, slides, transparencies, videotapes

Manylion Llyfryddiaeth
Prif Awdur: Rufsvold, Margaret Irene, 1907-
Fformat: Llyfr
Iaith:Saesneg
Cyhoeddwyd: Chicago American Library Association 1977
Rhifyn:4th ed.
Pynciau: