(3GdecJHGJ GdLGeYjI (B: s (3OQGSGJ aj GdecJHGJ GdcGOjejI h GdHMKjI (B/ s - (3HOQ, CMeOs ((3GdbGgQg (B:s (3ecJHI ZQjH,s, 1977)
Keywords: (3GdecJHGJ GdLGeYjIs