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Fotothek df tg Optik Instrument Katoptrik Reflexion Spiegel Zylinder Pyramide. Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Tabula Lib Wien Frankfurt Main Reflexion an ebenen Spiegeln Hohl und Wlbspiegeln Zylindern und Pyramiden Papier Kupferstich cm Optik Instrument Katoptrik Reflexion Spiegel Zylinder Pyramide