title: [Effectiveness of environmental zones in the first stage: analysis of the particulate matter concentration changes (PM10) in 19 German cities].
authors.forename: Dieter
authors.initials: D
authors.lastname: Köhler
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000517:prevention & control* / Q000706:statistics & numerical data*; D003247:Conservation of Natural Resources; D004391:Dust / Q000032:analysis* / Q000517:prevention & control*; D004784:Environmental Monitoring
chemical_list: D000393:Air Pollutants; D004391:Dust