The relationship of audiovisual material, equipment and technique utilization to perceived instructional effectiveness of teachers of educable mentally retarded children

Unrestricted.2016-11-142011-02-182016-11-141969-05http://hdl.handle.net/2346/13881Not availableapplication/pdfengChildren with mental disabilities -- EducationAudio-visual educationThe relationship of audiovisual material, equipment and technique utilization to perceived instructional effectiveness of teachers of educable mentally retarded childrenDissertation