(3TQM GdeNJGQ ef dRhejGJ GHi GdYdGA (B/ s - (3GdHWdjhSi (B, (3GHheMeO YHOGddgs; (3MGeO YHOGdeLjOs ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1991)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3OhGhjf hbUGFOs; (3GdOhdI GdYHGSjI GdKGfjIs; (3GHhGdYdGA GdeYQis