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Fotothek df tg Festungsbau Bastion Tranche Hornwerk Kronwerk Redan Ravelin Kurti. Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Abbildung KKKK Amsterdam Grundriss eines polygonalen Festungsbaus mit Kronwerk und Hornwerk Papier Kupferstich cm Festungsbau Bastion Tranche Hornwerk Kronwerk Redan Ravelin Kurtine