http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Title from PDF title screen (viewed on Aug. 13, 2007).
Mode of access: Internet from the USGS web site. Address as of 8/27/07: http://pubs.usgs.gov/fs/2007/3060/pdf/FS2007-3060.pdf; current access via PURL.
Fact sheet (Geological Survey (U.S.)) ; 2007-3060