Evaluation of tritium in ground and surface waters of the Western United States, April 1968-December 1969.
D011834:Radiation Monitoring; D012621:Seasons; D014316:Tritium / Q000032:analysis*; D014481:United States; D014867:Water / Q000032:analysis; D014878:Water Pollution, Radioactive
D014867:Water; D014316:Tritium