National and international milk surveillance.
D000818:Animals; D002170:Canada; D005507:Food Contamination, Radioactive; D006801:Humans; D007391:International Cooperation; D008892:Milk / Q000032:analysis*; D011834:Radiation Monitoring; D011847:Radioactive Fallout; D013020:South America; D014481:United States; D014492:United States Public Health Service
D011847:Radioactive Fallout