Document Type : Research Paper
Authors
1 Department of Agricultural Economics, Faculty of Agricultura Economics and Development, University of Tehran Karaj, Iran Professor
2 Ph.D. of agricultural economics, Extension and education science and research branch, Islamic Azad university of Tehran, Tehran, Iran.
3 PhD Candidate of Agricultural Economics, Agricultural Economics Department, Ferdowsi University of Mashhad, Mashhad, Iran
Abstract
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