(3GdQDi GdeJZjQI ai QhGjGJ fLjH eMahX (B/ s - (3YHOGdQMef GHhYhas ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1991)
Keywords: (3GdGOH GdYQHis; (3GdbUIs; (3fLjH eMahXs; (3JGQjN hfbOs