Water quality and possible sources of nitrogen and bacteria to Rock and Travertine Creeks, Chickasaw National Recreation Area, Oklahoma, 2004 / by Carol J. Becker ; prepared in cooperation with the National Park Service.
Imprint
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2006.
Mode of access: Internet at the USGS web site. Address as of 8/15/08: http://pubs.usgs.gov/sir/2005/5279/pdf/sir2005-5279.pdf ; current access is available via PURL.
Note
Title from PDF title page (viewed on Aug. 15, 2008).
