(3GdhRGQI hGdhRQGA aj GdYUQ GdaGWej (B/ s - (3eMeO MeOj GdefGhis ((3GdbGgQI (B: s (3OGQ GdeYGQa, s, 1970)
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdhRQGAs; (3GdbGfhf GdOSJhQis