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Fotothek df tg Architektur Festungsbau Bastion Redan Flesche Ravelin Face Flanke. Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Fig II Nrnberg Befestigungsanlagen Papier Kupferstich cm Architektur Festungsbau Bastion Redan Flesche Ravelin Face Flanke ppnX Druck Deutsche Fotothek gefrdert von der Deutschen Forschungsgemeinschaft