Water-quality characteristics, including sodium-adsorption ratios, for four sites in the Powder River drainage basin, Wyoming and Montana, water years 2001-2004 [electronic resource] / 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, 2006.
Water quality characteristics, including sodium-adsorption ratios, for four sites in the Powder River drainage basin, Wyoming and Montana, water years 2001-2004