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Fotothek df tg Akustik Musikinstrument Wind Resonanz. Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Abbildung Kempten Windharfe Papier Holzschnitt cm Akustik Musikinstrument Wind Resonanz ppn Druck Deutsche Fotothek gefrdert von der Deutschen Forschungsgemeinschaft Projekt Technikgeschichte Jh Verwalter Dresden