(3LQGFe GdEYJOGA Ydi GdCehGd (B/s - (3YHO GdQMje UObjs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI ,s, 2000)
(3jTJed Ydj HHdHhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdLQGFe GdeGSI HGdCehGds; (3GdbGfhf GdLfGFjs