(3QhGjI(B: (3GjGe hdjGdi GdSfOHGO(B, (3bUU bUjQI djGdi YQHjI (B/ s - (3GdaQjO aQLs ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1989)
Keywords: (3GdGOH GdYQHis; (3GdbUU GdYQHjI GdbUjQIs; (3GdeLehYGJs