http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Assessment of undiscovered petroleum resources of the north and east margins of the Siberian craton, Russian Federation
World assessment of oil and gas fact sheet
Title from title screen (viewed on July 11, 2008).
Mode of access: Internet from the USGS web site. Address as of 7/11/08: http://pubs.usgs.gov/fs/2008/3020/pdf/FS08-3020%5F508.pdf ; current access available via PURL.
Fact sheet (Geological Survey (U.S.)) ; 2008-3020