[Comparative data on 2 mass radiographies (1948, 1958-59)].
D035843:Biomedical Research; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D008175:Lung Neoplasms / Q000517:prevention & control*; D013902:Radiography, Thoracic
LUNG NEOPLASMS/prevention and control; LUNG/radiography