http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Geology and ore deposits of the Breckenridge mining district, Colorado
vi, 64 pages, 15 leaves of plates : illustrations, maps (some color) ; 29 cm
Introduction -- General geology -- Geologic history -- Mineralogy -- Ore deposits -- Mine descriptions -- Guides to ore and future of the district -- Production of mines in the district.
Includes bibliographical references and index
Lovering, T. S. (Thomas Seward), 1896-1991.
Washington [D.C.] : U.S. Govt. Print. Off., 1934
Geological Survey professional paper ; 176