http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
a history of discovery, development and production
iv, 263 pages : illustrations, maps (1 folded in pocket) ; 29 cm.
At head of title: Department of the Interior.
Includes bibliographical references (pages 248-249) and index.
Professional paper (Geological Survey (U.S.)) ; no. 138