[Smog episodes in the Ruhr district since 1980].
D000393:Air Pollutants / Q000032:analysis*; D002248:Carbon Monoxide / Q000032:analysis; D004391:Dust / Q000517:prevention & control; D005860:Germany, West; D006801:Humans; D008452:Maximum Allowable Concentration; D009585:Nitrogen Dioxide / Q000032:analysis; D012905:Smog / Q000517:prevention & control*; D013458:Sulfur Dioxide / Q000032:analysis; D001335:Vehicle Emissions / Q000517:prevention & control; D014887:Weather
D000393:Air Pollutants; D004391:Dust; D012905:Smog; D001335:Vehicle Emissions; D013458:Sulfur Dioxide; D002248:Carbon Monoxide; D009585:Nitrogen Dioxide
Smogepisoden im Ruhrgebiet seit 1980.