Document Type : Research Paper
Authors
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., .., ., . & ., .. (2003). . Economics Research, 3(8), 217–229.
., .., ., .., & ., .. ".", Economics Research, 3, 8, 2003, 217–229.
., .., ., .., & ., .. (2003). '.', Economics Research, 3(8), pp. 217–229.
., .., ., . & ., .., ".." Economics Research, 3 8 (2003): 217–229,
. .., . .., . .. . Economics Research. 2003;3(8):217–229 (In Persian).
