Document Type : Research Paper
Authors
1 Ph.D. candidate of agricultural economics, Ferdowsi university of Mashhad, Mashhad, Iran
2 Associate professor of agricultural economics, Ferdowsi university of Mashhad, Mashhad, Iran
3 Professor of agricultural economics, Ferdowsi university of Mashhad, Mashhad, Iran
4 Assistant professor of agricultural economics, University of Tehran, Karaj, Iran
Abstract
Keywords