(3eYjGQ GdGNJjHGQ PcQ GdeYGgO h GdOjGQ (B/s - (3THGf , eMeO ceGds ([(3Ohf ecGf(B] :s (3GdeYgO GdLGeYj ddHMK GdYdej HGdeZQH ,s, 1977)
Keywords: (3GdGNJjHGQ s; (3GdOjGQ s; (3GdeYGgO s; (3eYjGQ s