Fallout from nuclear weapons testing and interhemispheric transport of nuclear debris.
D000398:Air Pollution, Radioactive / Q000032:analysis; D001131:Arkansas; D002564:Cerium Isotopes / Q000032:analysis; D005431:Florida; D011834:Radiation Monitoring; D011847:Radioactive Fallout / Q000032:analysis*; D011868:Radioisotopes / Q000032:analysis; D013326:Strontium Radioisotopes / Q000032:analysis; D015040:Zirconium / Q000032:analysis
D002564:Cerium Isotopes; D011847:Radioactive Fallout; D011868:Radioisotopes; D013326:Strontium Radioisotopes; D015040:Zirconium