TY  - BOOK
T1  - Effective audio-visual a user's handbook
A1  - Simpson, Robert S.
LA  - English
PP  - London
PB  - Focal Press
YR  - 1987
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217606087641
OP  - 208
CN  - TS 2301 A7 S54
KW  - Audio-visual equipment.
ER  -