The relative radioactivity of building materials.
D000398:Air Pollution, Radioactive; D001108:Architecture; D002118:Calcium / Q000009:adverse effects; D005160:Facility Design and Construction; D011194:Potassium Isotopes / Q000032:analysis; D011827:Radiation; D011883:Radium / Q000032:analysis; D013057:Spectrum Analysis; D013431:Sulfates / Q000009:adverse effects; D013910:Thorium / Q000032:analysis; D006113:United Kingdom; D014501:Uranium / Q000032:analysis
D011194:Potassium Isotopes; D013431:Sulfates; D014501:Uranium; D013910:Thorium; D002118:Calcium; D011883:Radium