Linkages between on-farm research and extension in nine countries
Ewell, P.T.
Linkages between on-farm research and extension in nine countries - Netherland 1980 - 31 p. - No. 4; ISNAR, On-Farm Client-O .
63(072)(071.7)
Linkages between on-farm research and extension in nine countries - Netherland 1980 - 31 p. - No. 4; ISNAR, On-Farm Client-O .
63(072)(071.7)