http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Potentiometric surface of the Ozark aquifer in northern Arkansas, 2004
by T.P. Schrader ; prepared in cooperation with the Arkansas Natural Resources Commission, and the Arkansas Geological Commission.
Title from PDF title page (viewed on Aug. 22, 2008).
Mode of access: Internet at the USGS web site. Address as of 8/22/08: http://pubs.usgs.gov/sir/2005/5208/SIR2005-5208.pdf ; current access is available via PURL.
Scientific investigations report ; 2005-5208