http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
brief review of the geology of the San Juan region of southwestern Colorado
1 online resource (vi, 138 pages, 16 pages of plates) : illustrations, maps (some color).
Title from title screen (viewed July 8, 2014).
Includes bibliographical references and index.
Bulletin (Geological Survey (U.S.)) ; no. 843