http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
a recommended metric conversion plan for the U.S. maritime industry
Panel on Metrication in the U.S. Maritime Industry.
prepared by the Panel on Metrication in the U.S. Maritime Industry of the Maritime Transportation Research Board, Commission on Sociotechnical Systems, National Research Council.