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Fotothek df tg Bergwerk Bergbau Grubenbewetterung Wetterfhrung Wettertuch Leilachen. Creator Georgius Agricola Johann Becher Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Frankfurt Main Grubenbewetterung mit Hilfe eines Wettertuches Leilachen Papier Holzschnitt cm Bergwerk Bergbau Grubenbewetterung Wetterfhrung