MARC21       006a'11  Government publication
     Values: 
              #   Not a government publication
              a   Autonomous or semi-autonomous component
              c   Multilocal
              f   Federal/national
              i   International intergovernmental
              l   Local
              m   Multistate
              o   Government publication--level undetermined
              s   State, provincial, territorial, dependent, etc.
              u   Unknown if item is government publication
              z   Other