(3GdMeGjI GdbGfhfjfI ddGLF aj GdbGfhf GdOhdj (B/s - (3CHh GdNjQ CMeO YWjIs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1997)
. 215-222 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3Mbhb GdEfSGf s; (3GdbGfhf GdOhdj GdYGes