(3GdKhQI GdLRGFQjI h UOGgG aj GdYGde (B/s - (3eMeO, WhjHdjs ((3GdLRGQ (B:s (3GdeQcR GdhWfj ddOQGSGJ GdJGQjNjI ,s, 1984)
Keywords: (3GUGdI GdKhQI GdLRGFQjI s; (3GdKhQI GdadSWjfjI s; (3GdKhQI GdLRGFQjI s