http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
International Bureau of Weights and Measures, 1875-1975
translation of the BIPM centennial volume
U.S. Dept. of Commerce, National Bureau of Standards : for sale by the Supt. of Docs., U.S. Govt. Print. Off.
edited by Chester H. Page and Paul Vigoureux.
International Bureau of Weights and Measures.