(3GdGSJYeGQ GdYQHi bUjOI HGdYGejI GdeUQjI (B/ s - (3YHOGdQMef GdGHfhOis ([S.N] : (3GdeQcR GdGYdGei GdchjJi , s, 1991)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3GdYUQ GdMOjKs; (3GdTYQ Gdbheis; (3GdTYQ GdSjGSis