http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Conterminous United States Mineral Assessment Program
background information to accompany folio of geologic, geochemical remote sensing, and mineral resources maps of the Butte 1° x 2° quadrangle, Montana
1 online resource (iii, 17 pages) : maps.
Includes bibliographical references (pages 13-17).