title: [Chronic bronchitis among workers in a number of occupations and the smoking factor].
mesh_terms: D001991:Bronchitis / Q000453:epidemiology*; D002908:Chronic Disease; D006801:Humans; D008297:Male; D009790:Occupations; D012907:Smoking
vernacular_title: Khronicheskiĭ bronkhit u rabochikh riada professiĭ i faktor kureniia.