http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Coalbed methane extraction and soil suitability concerns in the Powder River Basin, Montana and Wyoming
Title from PDF title screen (viewed on July 28, 2008).
Mode of access: Internet from the USGS web site. Address as of 7/28/08: http://pubs.usgs.gov/fs/2006/3137/pdf/fs06-3137%5F508.pdf ; current access available via PURL.
Fact sheet (Geological Survey (U.S.)) ; 2006-3137