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Fotothek df tg Akustik Rohr Ordensliteratur Musikinstrument. Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Ellwangen Trommelrohr Schlangenrohr Papier Holzschnitt cm cm Akustik Rohr Ordensliteratur Musikinstrument ppn Druck Deutsche Fotothek gefrdert von der Deutschen Forschungsgemeinschaft Projekt Technikgeschichte