(3QHGYjGJ (B/ s - (3UdGM LGgjfs ([S.N] : (3eQcR GdGgQGe ddJQLeI hGdfTQ , s, 1987)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3GdYUQ GdMOjKs; (3UdGM LGgjfs