(3HQO GdCcHGO YfO abO GdChdGO (B/s - (3GHf fGUQ GdOjf, eMeO Hf YHO Gddg Hf eMeOs 777-842 (3g`(B.s; (3Bd SdeGf, eTghQ Hf MSf Hf eMehOs 1380 (3gLQj(B-s ((3GdNHQ (B- (3GdSYhOjI (B:s (3OGQ GHf YaGf,s, 1997)
Keywords: (3GdUHQs; (3GdCNdGb GdESdGejIs; (3GdBOGH GdESdGejIs; (3GdhYX hGdEQTGO s