books.google.frhttps://books.google.fr/books/about/Structure_shielding_against_fallout_gamm.html?id=opAklHndAy8C&utm_source=gb-gplus-shareStructure shielding against fallout gamma rays from nuclear detonations
Structure shielding against fallout gamma rays from nuclear detonations
By Lewis Van Clief Spencer, Arthur B. Chilton, Charles Eisenhauer, Center for Radiation Research, United States. National Bureau of Standards, University of Illinois at Urbana-Champaign
