Gross radioactivity in surface waters of the United States September 1971.
D005618:Fresh Water; D009518:New York; D011834:Radiation Monitoring; D012621:Seasons; D013325:Strontium Isotopes / Q000032:analysis; D014316:Tritium / Q000032:analysis; D014481:United States; D014878:Water Pollution, Radioactive; D014881:Water Supply
D013325:Strontium Isotopes; D014316:Tritium