(3OQhS ai bGfhf GdYbhHGJ GdbSe GdYGe (B/s - (3MSfjf YHjOs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI ,s, 2001)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3GdbGfhf GdLfGFj s