(3OQGSGJ aj GdhXjaI GdYGeI aj GdfXGe GdaQfSj(B/s - (3YHOGdMejO ceGd MTjTs ((3GdbGgQI (B:s (3ecJHI GdbGgQI GdMOjKI,s, 1974)
(3GdfU HGddZI GdYQHjIs
Keywords: (3hGLHGJ GdehXa GdYGes; (3GdbGfhf GdEOGQjs