Swinth, K. L.; Park, J. F. & Moldofsky, P. J. COUNTING PLUTONIUM IN THE TRACHEOBRONCHIAL LYMPH NODES., report, January 1, 1971; (https://digital.library.unt.edu/ark:/67531/metadc1025109/m1/1/: accessed April 18, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .