(3GdCfgGQ GdYXjeI aj GdYGde (B/ s - (3ghGjJ, Cf JjQjs; (3EHQGgje, eMeO YHO GdaJGMs ((3GdbGgQg (B:s (3OGQ GdeYGQa,s, 1992)
Keywords: (3GdCfgGQs; (3GdYGdes; (3fGTFhf cHGQ(B(15-18 (3SfI(B)s