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Keywords from Image Description:
Fotothek df tg Geometrie Trigonometrie Winkelma Instrument. Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Abbildung ohne Nr Nrnberg Instrument primi mobilis Papier Holzschnitt cm Geometrie Trigonometrie Winkelma Instrument ppn Druck Deutsche Fotothek gefrdert von der Deutschen Forschungsgemeinschaft Projekt Technikgeschichte