Titlebook: Lokalradio und Rechtsextremismus; Aufklärung im Hörfun Ralph Weiß,Bettina Nebel Book 1993 Springer Fachmedien Wiesbaden 1993 Ausländer.Ausl

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disastrous consequences. The most serious one of possible water disasters affecting the safe operation of coal mines in China is water inrushes from the Ordovician limestone under the Permo-Carboniferous coal seams in Northern China (Zhang and Shen 2004). The Ordovician limestone is a confined karst