(3GdTQb GdGOfi ai GdYUhQ GdhSWi (B(1) (3GdGjhHjhf (B/ s - (3GdSjO GdHGR GdYQjfis ([S.N] : (3OGQ GdfgVI GdYQHjI , s, 1967)
Keywords: (3GdJGQjNs; (3GdOhdI GdGjhHjIs; (3GdYUhQ GdhSWis; (3GdMVGQI GdGSdGejIs; (3GdGjhHjhfs