title: Principles for limiting exposure of the public to natural sources of radiation.
mesh_terms: D001417:Background Radiation; D003252:Construction Materials; D003359:Cosmic Radiation; D003362:Cost-Benefit Analysis; D004781:Environmental Exposure; D006798:Housing; D006801:Humans; D011634:Public Health; D011829:Radiation Dosage; D011835:Radiation Protection / Q000191:economics; D011839:Radiation, Ionizing; D011868:Radioisotopes; D011886:Radon
chemical_list: D011868:Radioisotopes; D011886:Radon