[Role of certain occupational factors in the chronic bronchitis morbidity of miners].
D001991:Bronchitis / Q000453:epidemiology* / Q000209:etiology; D002908:Chronic Disease; D006801:Humans; D008906:Mining; D009784:Occupational Diseases / Q000453:epidemiology* / Q000209:etiology; D014455:Ukraine
Rol' nekotorykh professional'nykh faktorov v zabolevaemosti khronicheskim bronkhitom gornorabochikh