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Fotothek df tg Architektur Proportion Treppe Stiege Kapitell. Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Kupferstich LVIIII Bayreuth Proportionen von Stiegen Treppen Papier Kupferstich cm Architektur Proportion Treppe Stiege Kapitell ppn Druck Deutsche Fotothek gefrdert von der Deutschen Forschungsgemeinschaft