(3JMhdGJ Wg MSjf (B/ s - (3eUWai YHOGdZfis ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1990)
Keywords: (3GdGOH GdYQHis; (3GdYUQ GdMOjKs; (3Wg MSjfs; (3JGQjN hfbOs