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Fotothek df tg Mechanik Wasserfrderung Pneumatik Druck Pumpe Brunnen. Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Abbildung Nr Leipzig Altenburg Pumpbrunnen Papier Kupferstich cm Mechanik Wasserfrderung Pneumatik Druck Pumpe Brunnen ppn Druck Deutsche Fotothek gefrdert von der Deutschen Forschungsgemeinschaft