Abstract
(1994). -. Journal of Economic Research (Tahghighat- E- Eghtesadi), 31(48), -.
. "-", Journal of Economic Research (Tahghighat- E- Eghtesadi), 31, 48, 1994, -.
(1994). '-', Journal of Economic Research (Tahghighat- E- Eghtesadi), 31(48), pp. -.
, "-," Journal of Economic Research (Tahghighat- E- Eghtesadi), 31 48 (1994): -,
-. Journal of Economic Research (Tahghighat- E- Eghtesadi), 1994; 31(48): -.
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