(3GdJbdjO hGdJLOjO ai GdTYQ GdYHGSi (B/ s - (3UdGM eUdMi YHO Gddgs ([S.N] : (3OGQ GdeYQaI GdLGeYjI , s, 1991)
Keywords: (3GdTYQ GdYQHis; (3JGQjN hfbOs