Crocker, G.R. & Connors, M.A. GAMMA-EMISSION DATA FOR THE CALCULATION OF EXPOSURE RATES FROM NUCLEAR DEBRIS. VOLUME I. FISSION PRODUCTS, report, June 10, 1965; (https://digital.library.unt.edu/ark:/67531/metadc1029861/m1/1/: accessed April 26, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .