(3OQGSGJ aj GdCOH GdYQHj Ydi eQ GdYUhQ eY HMK NGU HGdCOH GdYQHj GdSYhOj (B/s - (3GdSGSj, YeQ GdWjH,s 1359-1435 (3gLQjG(B.s ((3LOI (B:s (3OGQ GdTQhb,s, 1990)
Keywords: (3GdCOH GdYQHjs -- (3JGQjN hfbOs -- (3bQf (B20s