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Fotothek df tg Bergbau Markscheidekunst Messinstrument Gradbogen Messstab Zirkel Wi. Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Titelkupfer Eisleben Titelkupfer Allegorie der Vermessung Papier Kupferstich cm beschnitten Bergbau Markscheidekunst Messinstrument Gradbogen Messstab Zirkel Winkelmesser Kompass