(3GShGb HZOGO MJi HOGjI GdYUQ GdHhjgj (B145-334(3g(B/763-945(3e(B:s - (3GdcHjSj ,MeOGf YHO GdeLjOs ((3HZOGO(B:s (3OGQ GdMQjI ddWHGYI ,s, 1979)
Keywords: (3GdYQGb(B-(3JGQjNs