(3GdGdb GdhGaO (B/ s - (3gdGd GdYGeQis ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1991)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3GdYUQ GdMOjKs