http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Title from title screen (viewed on Mar. 16, 2009).
Mode of access: Internet from the USGS web site. Address as of 3/16/09: http://pubs.usgs.gov/fs/2008/3100/pdf/FS08-3100.pdf ; current access available via PURL.
Fact sheet (Geological Survey (U.S.)) ; 2008-3100