Keywords
(2000). -. Iranian Journal of Natural Resources (Not Publish), 53(2), -.
. "-", Iranian Journal of Natural Resources (Not Publish), 53, 2, 2000, -.
(2000). '-', Iranian Journal of Natural Resources (Not Publish), 53(2), pp. -.
, "-," Iranian Journal of Natural Resources (Not Publish), 53 2 (2000): -,
-. Iranian Journal of Natural Resources (Not Publish), 2000; 53(2): -.
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