Mercury geochemistry of gold placer tailings, sediments, bedrock, and waters in the lower Clear Creek Area, Shasta County, California [electronic resource] : report of investigations, 2001-2003 / by Roger P. Ashley and James J. Rytuba.
Imprint
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2008.
Mode of access: Internet from the USGS web site. Address as of 8/18/08: http://pubs.usgs.gov/of/2008/1122/of2008-1122.pdf; current access available via PURL.
Note
Title from title screen (viewed on Aug. 18, 2008).