title: Multimedia marketplace. A national survey of audio-visual materials including film/filmstrips, slide sets and video cassettes.
mesh_terms: D000488:Allied Health Personnel / Q000193:education*; D001296:Audiovisual Aids; D002379:Catalogs, Commercial as Topic; D004634:Emergency Medical Technicians / Q000193:education*; D013664:Teaching Materials; D014481:United States