[Studies on the technic of radiography with cobalt gamma rays].
D003035:Cobalt; D003037:Cobalt Radioisotopes; D005720:Gamma Rays; D006801:Humans; D011851:Radioactivity; D011859:Radiography
D003037:Cobalt Radioisotopes; D003035:Cobalt
COBALT/radioactive; RADIOGRAPHY