(3GdCSaGQ GdebOSI bHd GdESdGe (B: s (3OQGSI dLhGfH GdEYJbGO aj GdjghOjI h GdeSjMjI (B/ s - (3WYjeg, UGHQs ((3HjQhJ (B:s (3YGde GdcJH,s, 1985)
Keywords: (3GdOjf GdebGQfs; (3GdJhQGIs