(3GdMeGjI GdbGfhfjI ddMGI GdNGUI ddYGed hVeGfGJgG (B:s (3aj Xd GdhSGFd GdJcfhdhLjI GdMOjKI (B/s - (3UdGM eMeO CMeO OjGHs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 2001)
. 277-261 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdMbhb GdMQjGJ GdYGeIs; (3GdbGfhf GdOSJhQjs