TY  - BOOK
AU  - Haas, Dr. Kenneth B.
AU  - Packer, Dr. Harry Q.
TI  - Preparation and Use of Audio-Visual AIDS
U1  - 371.33 
PY  - 1964///
CY  - New Delhi
PB  - Prentice-Hall of India Pvt. Ltd.
KW  - Education
KW  - Social sciences
KW  - Audiovisual aids
KW  - Educational technology
ER  -