(3OejI GdbUQ hYUQI Ggd GdYUQ(B:s - (3GdHGNQRj,GHh GdMSfs ((3HZOGO(B:s (3eWHYI GdeYGQa,s, 1970)
Keywords: (3GdTYQ GdYQHjs -- (3GdYUQ GdGJGHcjs