(3OQhS aj GdLQGFe GdeVQI HGdeUdMI GdYGeI (B/s - (3CSGeI MSfjf YHjOs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI ,s, 2006)
. 254-247(3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3bGfhf GdYbhHGJ GdbSe GdNGUs; (3GdLQGFe GdeVQI HGdeUdMI GdYGeIs