. _:b17347900 _:b17347901 . . _:b17347904 . _:b17347901 _:b17347902 . _:b17347901 . "The unit of measurement given using the UN/CEFACT Common Code (3 characters) or a URL. Other codes than the UN/CEFACT Common Code may be used with a prefix followed by a colon." . _:b17347900 . _:b17347903 _:b17347904 . _:b17347902 . _:b17347900 . _:b17347904 . "unit code" . _:b17347902 _:b17347903 . _:b17347903 .