TY  - BOOK
AU  - Haas, Kenneth B.
TI  - Preparation and use of audio-visual aids /Kenneth B. Haas, And Harry Q. Packer
U1  - 268.635 
PY  - 1950///
CY  - New York
PB  - Prentice-Hall
KW  - Christian education
KW  - Audio-visual use
ER  -