title: [Definition of concepts and systematization of hazardous substances].
authors.forename: A G
authors.initials: AG
authors.lastname: Bazaz'ian
authors.forename: S V
authors.initials: SV
authors.lastname: Suvorov
mesh_terms: D004190:Disasters; D004785:Environmental Pollutants; D015386:Hazardous Substances / Q000145:classification / Q000633:toxicity; D006801:Humans; D011890:Railroads; D009626:Terminology as Topic; D014186:Transportation
chemical_list: D004785:Environmental Pollutants; D015386:Hazardous Substances
vernacular_title: Opredelenie poniatiĭ i sistematizatsiia veshchestv povyshennoĭ opasnosti.