(3GdhLjR aj GdLfSjI heQcR GdCLGfH aj GdbGfhfjf GdeUQj h GdebGQf (B/s - (3aDGO YHOGdefYe QjGVs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1987)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdCLGfH (B-- (3eQcR bGfhfj (B-- (3bGfhf Ohdjs; (3GdbGfhf GdOhdj GdNGU s