http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1 online resource (iii, 222 pages, 2 pages of plates) : illustration, map.
J.G. Staack, Chief Topographic Engineer.
Title from title screen (viewed July 9, 2014).
Includes bibliographical references and index.
Bulletin (Geological Survey (U.S.)) ; no. 912