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����������� U.S. Geological Survey Circular 410
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Seiler, R. L., Joseph P. Skorupa, and Lorri A. Peltz. 1999. Areas susceptible to irrigation-induced selenium contamination of water and biota in the western United States. Carson City, Nev: U.S. Dept. of the Interior.
����������� U.S. Geological Survey Circular 1180
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Gilliom, Robert J., William M. Alley, and Martin E. Gurtz. 1995. Design of the national water-quality assessment program: occurrence and distribution of water-quality conditions. Sacramento, Calif: U.S. Geological Survey.
����������� U.S. Geological Survey Circular 1112 : 2 copies available
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Hem, John David. 1985. Study and interpretation of the chemical characteristics of natural water. [Reston, Va.?]: Dept. of the Interior, U.S. Geological Survey.
����������� U.S. Geological Survey Water-supply paper 2254
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Heath, Ralph C. 1983. Basic ground-water hydrology. [Washington, DC]: US Government Print. Office.
����������� U.S. Geological Survey Water-supply paper 2220 : 2 copies available
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Bureau of Reclamation (U.S.), and National Irrigation Water Quality Program (U.S.). 1998. Guidelines for interpretation of the biological effects of selected constituents in biota, water, and sediment. Denver, CO: U.S. Dept. of the Interior, Bureau of Reclamation.
����������� National Irrigation Water Quality Program Information Report no. 3 : 2 copies available
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Shelton, L. R. 1994. Field guide for collecting and processing stream-water samples for the National Water-Quality Assessment Program. Sacramento, Calif: U.S. Geological Survey.
����������� U.S. Geological Survey Open-File report 94-458
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Shelton, L. R., and Paul D. Capel. 1994. Guidelines for collecting and processing samples of stream bed sediment for analysis of trace elements and organic contaminants for the National Water-Quality Assessment Program. Sacramento, Calif: U.S. Dept. of the Interior, U.S. Geological Survey.
����������� U.S. Geological Survey Open-File report 94-458