title: [Prevalence of chronic bronchitis in a mechanical engineering industry (author's transl)].
mesh_terms: D000293:Adolescent; D000328:Adult; D001991:Bronchitis / Q000453:epidemiology*; D002908:Chronic Disease; D004781:Environmental Exposure; D006801:Humans; D007558:Italy; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000453:epidemiology*; D012907:Smoking / Q000150:complications; D013997:Time Factors
vernacular_title: La bronchite cronica in un'industria metalmeccanica