Guides to educational media films, filmstrips, multimedia kits, programmed instruction materials, recordings on discs and tapes, slides, transparencies, videotapes
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | Saesneg |
| Cyhoeddwyd: |
Chicago
American Library Association
1977
|
| Rhifyn: | 4th ed. |
| Pynciau: |