(3GdCOH GdeaQO (B/ s - (3GdHNGQj, CHh YHO Gddg eMeO Hf GSeGYjds (3GdeJhai SfI (B256(3g`,s ((3HjQhJ (B:s (3YGde GdcJH,s, 1984)
Keywords: (3GdMOjK GdTQja(B.s; (3JaSjQ GdMOjK(B.s; (3GdESdGe(B.s