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Areal and temporal variations in the quality of surface water in hydrologic accounting unit 120301, upper Trinity River Basin, Texas
Wells, Frank C.Austin, Texas : United States Department of the Interior, Geological Survey, 1986Online purl.fdlp.gov
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Computation and use of volume-weighted-average concentrations to determine long-term variations of selected water-quality constituents in lakes and reservoirs
Wells, Frank C.Austin, Texas : U.S. Geological Survey, 1984Online purl.fdlp.gov
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Statistical summary of daily values data and trend analysis of dissolved-solids data at National Stream Quality Accounting Network (NASQAN) stations
Wells, Frank C.Austin, Texas : U.S. Geological Survey, 1983Online purl.fdlp.gov
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