Natural environmental radioactivity in south Florida sands and soils, February-June 1968.
D005431:Florida; D011188:Potassium; D011834:Radiation Monitoring; D011883:Radium; D012987:Soil; D013910:Thorium; D014501:Uranium
D012987:Soil; D014501:Uranium; D013910:Thorium; D011188:Potassium; D011883:Radium