Water-quality characteristics for sites in the Tongue, Powder, Cheyenne, and Belle Fourche River drainage basins, Wyoming and Montana, water years 2001-05, with temporal patterns of selected long-term water-quality data / by Melanie L. Clark and Jon P. Mason ; prepared in cooperation with the Wyoming Department of Environmental Quality.
Imprint
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2007.
Mode of access: Internet at the USGS web site. Address as of 8/22/08: http://pubs.usgs.gov/sir/2007/5146/pdf/sir2007-5146.pdf; current access is available via PURL.
Note
Title from PDF title screen (viewed on Sept. 14, 2007).