[Theoretical and practical problems of filter irradiation in telecobalt therapy].
D003035:Cobalt; D003037:Cobalt Radioisotopes; D005374:Filtration; D006801:Humans; D011851:Radioactivity; D011878:Radiotherapy
D003037:Cobalt Radioisotopes; D003035:Cobalt
COBALT/radioactive; RADIOTHERAPY