(3GdhLjR aj GdfXQjGJ hGdCfXeI GdSjGSjI heHGOFgG GdOSJhQjI (B/s - (3YHO GdMejO eJhdjs ((3GdbGgQI (B:s (3OGQGdeYGQa,s, 1957)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdfXe GdSjGSjIs; (3GdbGfhf GdOSJhQjs