c - (3YHO GdhGMO eMeO GdaGQs ((3GdbGgQI (B: s (3OGQ GdfgVI GdYQHjI, s, 1980)
. 197-189 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdeYGgOGJ GdOhdjIs; (3GdbGfhf GdOhdj GdYGes