(3OQGSGJ fbOjI ai GddSGfjGJ GdYQHjI GdeYGUQI (B/ s - (3SYO eUdhMs ([S.N] : (3YGde GdcJH GdMOjK , s, 1989)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3GdGOHs; (3JGQjN hfbOs