Document Type : Research Paper
Authors
1 Campus of Agriculture and Natural Resources, University of Tehran / Faculty of Agricultural Economics and Development / Department of Agricultural Extension and Education
2 Faculty of Economics and Agricultural Development, University of Tehran, PhD in Agricultural Education and Extension
3 College of agricultural economics and development, Department of agricultural extension and education
4 Faculty of Economics and Agricultural Development . University of Tehran,Karaj ,Iran
5 Faculty of Public Administration, University of Tehran
Abstract
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