TY  - GEN
AU  - Swanson, Burton E.
TI  - Agricultural Extension : A reference Manual
SN  - 92-5-101504-X
U1  - 630.7150202 SWA 
CY  - Rome, F A O
KW  - Agricultural extension / Extension Teaching Methods / Extension Adminstration / ExtensionCommunication / Extension Compaigns
ER  -