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Fotothek df tg Architektur Festung Bastion Grundriss Oktogon. Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Lib Cap Figur Frankfurt Main Oktogonale Bastionrsfestung Grundriss Papier Kupferstich cm Architektur Festung Bastion Grundriss Oktogon ppn Druck Deutsche Fotothek gefrdert von der Deutschen Forschungsgemeinschaft