TY  - BOOK
AU  - Haas, Kenneth B..
AU  - Packer, Harry Q..
TI  - Preparation and Use of Audio-Visual Aids
U1  - 371.335 
PY  - 1964///
CY  - New Delhi
PB  - Prentice-Hall of India(Pvt Ltd)
KW  - Education
KW  - Audio-Visual Aids
KW  - G-Education
N1  - Index
ER  -