title: Radon-222 in municipal water supplies in the central United States.
mesh_terms: D001131:Arkansas; D007196:Indiana; D008145:Louisiana; D008910:Minnesota; D009329:Nebraska; D009516:New Mexico; D009825:Oklahoma; D011886:Radon / Q000032:analysis*; D013781:Texas; D014878:Water Pollution, Radioactive / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
chemical_list: D011886:Radon