MEASUREMENTS OF AIRBORNE RADIONUCLIDES
221
13. T. Hvinden, A. Lillegraven, and O. Lillesaeter, Seasonal and Latitudina
Variations in Radioactive Fallout, Report F-412, Norwegian Defence Re-
search Establishment, January 1961.
14, R-W, Perkins, Physical and Chemical Formsof !9'] from Fallout and Chem-
ical Processing Plants,in Hanford Radiological Science Research and Development Annual Report for 1963, USAEC Report HW-81746, Hanford Atomic
Products Operation, January 1964,