title: [Primary cancer of the lungs and problems in its early detection].
mesh_terms: D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D010779:Photofluorography; D013997:Time Factors
vernacular_title: Pervichnyĭ rak legkogo i nekotorye voprosy ego svoevremennogo raspoznavaniia.