title: Influence of the distribution of 222Rn concentration under the ground on natural gamma-ray flux density and exposure rate.
mesh_terms: D001417:Background Radiation; D004781:Environmental Exposure; D005720:Gamma Rays; D007564:Japan; D008962:Models, Theoretical; D011886:Radon; D012989:Soil Pollutants; D012990:Soil Pollutants, Radioactive
chemical_list: D012989:Soil Pollutants; D012990:Soil Pollutants, Radioactive; D011886:Radon