[Treatment of waste water in coal mining].
D003031:Coal; D005860:Germany, West; D007220:Industrial Waste; D008722:Methods; D008906:Mining; D012722:Sewage; D014876:Water Pollution / Q000517:prevention & control
D003031:Coal; D007220:Industrial Waste; D012722:Sewage
Uber die Behandlung von Abwässern des Steinkohlenbergbaues.