title: Evaluation by alpha-track detectors of Rn concentrations and f values in the natural environment.
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000396:Air Pollutants, Radioactive / Q000032:analysis*; D000512:Alpha Particles; D011059:Polonium / Q000032:analysis; D011834:Radiation Monitoring / Q000295:instrumentation*; D011886:Radon / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D000396:Air Pollutants, Radioactive; D011059:Polonium; D011886:Radon