TY  - BK
AU  - Chambers,J.V.
AU  - Humphrey,S.
TI  - Planning and preparing visual presentations for large audiences
PY  - 1990///
CY  - Davis, CA (USA)
PB  - University of California. Division of Agriculture and Natural Resources, 
KW  - Audiovisual aids
KW  - Extension activities
KW  - Films
KW  - Teaching materials
ER  -