(3GdfGHZI(B: (3SjGSJg hafg hfaSjJg (B/ s - (3GjdjG GdMGhis ([S.N] : (3OGQ GdKbGaI GdYQHjI , s, 1981)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3GdYUQ GdLGgdis; (3GdfGHZI GdPHjGfis