(3GdZRh GdEjWGdj ddjHjG (B/ s - (3GdTJjhj, efUhQ YeQs ((3WQGHdS (B( (3djHjG (B) :s (3ecJHI GdaQLGfj,s, 1970)
Keywords: (3JGQjN djHjGs; (3GdESJYeGQs