[Nosological independence of chronic dust bronchitis as an occupational disease (apropos of a discussion)].
D001249:Asthma / Q000145:classification*; D002908:Chronic Disease; D004391:Dust; D009784:Occupational Diseases / Q000145:classification*
D004391:Dust
O nozologicheskoĭ samostoiatel'nosti khronicheskogo pylevogo pronkhita kakprofessional'nogo zabolevanii (po povoku odnoĭ diskussii.