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. "", Nivar, 31, 60-61, 2006, 20-31.
. (2006). '', Nivar, 31(60-61), pp. 20-31.
, "," Nivar, 31 60-61 (2006): 20-31,
. . Nivar. 2006;31(60-61):20-31 (In Persian).
