Section 3. Air and deposition.
D000398:Air Pollution, Radioactive; D002170:Canada; D004781:Environmental Exposure; D006801:Humans; D008800:Mexico; D011834:Radiation Monitoring; D011847:Radioactive Fallout; D013020:South America; D014481:United States; D014492:United States Public Health Service
D011847:Radioactive Fallout