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Ruhrbergbau Zahlen. de January Frderrate und Beschftigtenzahlen in einer Ausstellung des Bergbaumuseums Bochum own original text eigenes Foto Rainer Sielker PDrelease Original upload log de Wdwdbot CommonsHelper de RuhrbergbauZahlen Rasi bytes no Andere Versionen Uncategorized January
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