Smoking and radon.
Ravenholt
R T
RT
D000393:Air Pollutants / Q000032:analysis*; D000396:Air Pollutants, Radioactive / Q000032:analysis*; D000512:Alpha Particles; D010947:Plants, Toxic; D011886:Radon / Q000032:analysis*; D012906:Smoke; D014026:Nicotiana
D000393:Air Pollutants; D000396:Air Pollutants, Radioactive; D012906:Smoke; D011886:Radon