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Fotothek df tg Architektur Geometrie Festungsbau Hafen. Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Abbildung Nr Frankfurt Main Grundriss Hafenfestung Papier Kupferstich cm Architektur Geometrie Festungsbau Hafen ppnX Druck Deutsche Fotothek gefrdert von der Deutschen Forschungsgemeinschaft Projekt Technikgeschichte