(3GdbGVi GdLQLGfi hGdfbO GdGOHi (B/ s - (3GdLQLGfi , GdbGVi GHhGdMSfs ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1991)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3GdHdGZI GdYQHjIs; (3JGQjN hfbOs