Improving agricultural extension: A reference manual /
Swanson, Burton E .
Improving agricultural extension: A reference manual / - Delhi : Daya Publishing House , 2005. - 220 ; .
630.71 / SWA/IM
Improving agricultural extension: A reference manual / - Delhi : Daya Publishing House , 2005. - 220 ; .
630.71 / SWA/IM
