The ionization of the air due to beta- and gamma-radiations near the ground. (II).
D000398:Air Pollution, Radioactive / Q000032:analysis*; D007564:Japan; D009689:Nuclear Warfare; D006109:Poaceae / Q000032:analysis; D012987:Soil / Q000032:analysis; D013057:Spectrum Analysis; D013997:Time Factors
D012987:Soil