title: [Methodologic problems in studying mortality among industrial workers (using the coal industry as an example)].
mesh_terms: D003032:Coal Mining; D004812:Epidemiologic Methods; D006801:Humans; D009026:Mortality; D009787:Occupational Medicine / Q000379:methods*
vernacular_title: Metodicheskie voprosy izucheniia smertnosti promyshlennykh rabochikh (na primere ugol'noĭ promyshlennosti).