250 (3SDGd hLhGH (B/ s - (3YHGS deYs ([S.N] : (3GdeDSSI GddHfGfjI GdYQHjI ddJhRjY , s, 1989)
Keywords: (3GdJKbja GdPGJis; (3GdKbGaI GdPGJjIs; (3GdeYQaIs