"Virginia" . . "Hydrogeochemie" . . "Dissolved radon and uranium, and ground-water geochemistry in an area near Hylas, Virginia"@en . "Dissolved radon and uranium, and ground-water geochemistry in an area near Hylas, Virginia" . . . . . . . . "Radon and uranium in ground water, Hylas, Virginia"@en . . . . . "Dissolved radon and uranium, and ground water geochemistry in an area near Hylas, Virginia" . . . . . . . . . . . . . . . . . . . . . . . . "Radon and uranium in ground water: Hylas, Virginia" . . . "Hylas (Va., Region)" . . "Radon Environmental aspects." . . "Mylonite Virginia Hylas Region." . . "Uranium Environmental aspects." . . "Groundwater Pollution Virginia Hylas region." . . "Grundwasser" . . "Radioaktive Kontamination" . . "Radioactive pollution of water Virginia Hylas region." . . "Radioactive pollution of water Virginia Hylas Region." . "Geological Survey (U.S.)," . . "Uranium Environmental aspects Virginia Hylas Region." . . . . "Radon Environmental aspects Virginia Hylas Region." . .