http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1 online resource (4 unnumbered pages) : illustrations
Title from title screen (viewed on July 30, 2009).
At head of title: USGS and the Gulf of Mexico Alliance.
Fact sheet (Geological Survey (U.S.)) ; 2009-3059