(3GdcGaj aj abg Cgd GdeOjfI GdeGdcj (B/s - (3Hf YHO GdHQ, jhSa Hf YHO Gddg Hf eMeO,s 368-463 (3g`(B.s ((3HjQhJ (B:s (3OGQ GdcJH GdYdejI,s, 1987)
Keywords: (3Gdabg GdeGdcjs; (3Gdabg GdESdGejs -- (3ePGgHs