The plant concentration ratio concept as applied to natural U.
D010944:Plants / Q000378:metabolism*; D012989:Soil Pollutants / Q000032:analysis*; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D014501:Uranium / Q000378:metabolism*; D014894:Weights and Measures
D012989:Soil Pollutants; D012990:Soil Pollutants, Radioactive; D014501:Uranium