http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
papers and proceedings IUCN's twelfth technical meeting, Banff, Alberta, Canada 12 to 15 September 1972 = Rapports et proces-verbaux douzieme reunion technique de l'uicn
International Union for Conservation of Nature and Natural Resources 1972 : Banff)