[Problem of chronic dust-induced bronchitis].
D001991:Bronchitis / Q000209:etiology*; D004391:Dust; D006801:Humans; D007501:Iron / Q000009:adverse effects; D008906:Mining; D009784:Occupational Diseases / Q000209:etiology; D014455:Ukraine
D004391:Dust; D007501:Iron
K probleme khronicheskikh pylevykh bronkhitov