TY  - BOOK
AU  - Perraton,H.D.
TI  - Basic education and agricultural extension: costs, effects and alternatives 
SN  - 0821301764 :
U1  - 630.717 
PY  - 1983///
CY  - Washington
PB  - World Bank
KW  - Agricultural extension work
KW  - Mass media in agricultural extension work
KW  - Basic education
KW  - Farmers
KW  - Education
KW  - Africa
KW  - Case studies
ER  -