title: Comments on 'The natural radioactivity of potable waters in Saudi Arabia'.
mesh_terms: D011883:Radium / Q000032:analysis; D012529:Saudi Arabia; D013793:Thallium / Q000032:analysis; D013910:Thorium / Q000032:analysis; D014873:Water Pollutants / Q000032:analysis*; D014875:Water Pollutants, Radioactive / Q000032:analysis*
chemical_list: D014873:Water Pollutants; D014875:Water Pollutants, Radioactive; D013910:Thorium; D013793:Thallium; D011883:Radium