(3GZfjGA abQGA WQaGA(B, (3GdMH dYHI(B, (3GdZQjH (B/ s - (3GdaQjO aQLs ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1989)
Keywords: (3GdGOH GdYQHis; (3GdeSQMjGJ GdeUQjIs; (3GdeSQMjGJ GdchejOjIs; (3GdeSQMjGJ GdYQHjIs