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Fotothek df tg Archologie Geologie Gestein Knochen Fossil. Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Abbildung Zrich Osteolithen Knochenversteinerungen Papier Holzschnitt cm Archologie Geologie Gestein Knochen Fossil ppn Druck Deutsche Fotothek gefrdert von der Deutschen Forschungsgemeinschaft Projekt Technikgeschichte