[Occupational etiology of lung diseases in workers].
D002031:Bulgaria; D004781:Environmental Exposure; D006801:Humans; D008171:Lung Diseases / Q000453:epidemiology / Q000209:etiology*; D009784:Occupational Diseases / Q000453:epidemiology*
K voprosu o professional'noĭ étiologii legochnykh zabolevaniĭ u rabochikh