(3UQGN GdgGhjI (B/ s - (3QGcGf Jhajb GdUaJis ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1989)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3GdYUQ GdMOjKs