title: Air Concentrations of Twelve Radionuclides from 1962 through Mid-1964.
abstract: New spectrometric techniques for the multidimensional counting of gamma rays permit the direct measurement of twelve radionuclides collected on air filters. Observed concentrations of Be(7), Na(22), Mn(54), Co(60), Y(88), Zr(95)-Nb(25), Ru(166), Sb(124), Sb(125), Cs(134), Cs(137), and Ce(144) during the past 2(1/2) years help to explain the origin and fallout rates of the trace radionuclides in air.
authors.forename: R W
authors.initials: RW
authors.lastname: Perkins
authors.forename: J M
authors.initials: JM
authors.lastname: Nielsen
authors.forename: C W
authors.initials: CW
authors.lastname: Thomas