title: [Legal principles of clean air policy (laws, regulations, guide lines)].
mesh_terms: D000397:Air Pollution / Q000517:prevention & control*; D005860:Germany, West; D006801:Humans; D007878:Legislation as Topic
vernacular_title: Gesetzliche Grundlagen zur Lufthygiene (Gesetze, Verordnungen, Richtlinien).