http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
National Committee for Digital Cartographic Standards (U.S.)
"This work of the committee funded in part by U.S. Geological Survey grant #14-08-0001-G-807."
Issues in digital cartographic data standards ; rept. # 4