title: [Heating systems in the modernization of old buildings].
mesh_terms: D003031:Coal; D004560:Electricity; D005648:Fuel Oils; D005740:Gases; D005860:Germany, West; D006361:Heating; D006798:Housing
chemical_list: D003031:Coal; D005648:Fuel Oils; D005740:Gases
vernacular_title: Heizungssysteme für Altbaumodernisierung