Relationship of noxious gases to carcinoma of the lung in railroad workers.
D005740:Gases; D006801:Humans; D008168:Lung; D008175:Lung Neoplasms / Q000209:etiology*; D009784:Occupational Diseases; D011890:Railroads
D005740:Gases
LUNG NEOPLASMS/etiology; OCCUPATIONAL DISEASES