http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Assessment of undiscovered biogenic gas resources, North-Central Montana Province
National assessment of oil and gas fact sheet
Title from title screen (viewed on July 15, 2008).
Mode of access: Internet from the USGS web site. Address as of 7/15/08: http://pubs.usgs.gov/fs/2008/3036/pdf/FS08-3036%5F508.pdf ; current access available via PURL.
Includes bibliographical references (page [2]).
Fact sheet (Geological Survey (U.S.)) ; 2008-3036