http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Mines, prospects, and occurrences of metallic minerals in the Rolla 1⁰ x 2⁰ quadrangle, Missouri
Miscellaneous field studies (Geological Survey (U.S.)) ; MF-1005-B