Affiliation: | 1. Department of Agricultural Extension and Education, Bu-Ali Sina University, Hamedan, Iranyaghoubi@basu.ac.ir;3. Department of Agricultural Extension and Education, Bu-Ali Sina University, Hamedan, Iran;4. Agricultural Extension, Bu-Ali Sina University, Hamedan, Iran;5. Agricultural Extension, Tarbiat Modarres University, Tehran, Iran |