title: Atmospheric radiocarbon activity in 1959.
authors.forename: E H
authors.initials: EH
authors.lastname: WILLIS
mesh_terms: D001272:Atmosphere / Q000737:chemistry*; D018554:Avena / Q000737:chemistry*; D002250:Carbon Radioisotopes / Q000032:analysis*; D054043:Nuclear Weapons
chemical_list: D002250:Carbon Radioisotopes