(3OGQhf h fXQjI GdJWhQ (B/ s - (3HdhJ, TeS GdOjf Bbs; (3Ydj, ChQNGf eMeOs ((3GSJfGHhd (B:s (3OGQ jfj BSjG ddfTQ,s, 1987)
Keywords: (3GdJWhQs; (3fXQjI GdJWhQs