title: [Chief problems in improving the healthfulness of working conditions in the coal mining industry].
mesh_terms: D003032:Coal Mining; D006801:Humans; D009784:Occupational Diseases / Q000517:prevention & control*; D014586:USSR
vernacular_title: Osnovnye voprosy ozdorovleniia uslovii truda v ugol'noĭ promyshlennosti.