Los materiales audiovisuales en la comunicacion agricola
Olmos B., G.
Los materiales audiovisuales en la comunicacion agricola - Montecillo, Tex. (Mexico) : Colegio de Postgraduados, 1970 - various pagings - Printed
Illustrations, bibliography
Spanish
Audiovisual aids
Films
Information flow
Instruments
Mass media
Photography
Teaching materials
630.0208 / OLM
Los materiales audiovisuales en la comunicacion agricola - Montecillo, Tex. (Mexico) : Colegio de Postgraduados, 1970 - various pagings - Printed
Illustrations, bibliography
Spanish
Audiovisual aids
Films
Information flow
Instruments
Mass media
Photography
Teaching materials
630.0208 / OLM