Browsing by Author "Helsel, Dennis R."
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- The Significance of heavy metals in urban runoff entering the Occoquan ReservoirRandall, Clifford W.; Hoehn, Robert C.; Grizzard, Thomas J.; Gawlik, Stanley Peter, 1954-; Helsel, Dennis R.; Lorenz, William D., 1954- (Virginia Water Resources Research Center, Virginia Polytechnic Institute and State University, 1981)