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1375 - On the Sensations of Tone, As a Physiological Basis for The Theory of Music. Hermann Helmholtz (3), 1875
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1375 - On the Sensations of Tone, As a Physiological Basis for The Theory of Music. Hermann Helmholtz (5), 1875
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1376 - Hermann L. F. Helmholtz. Retrato obra de Ludwig Knaus, 1881
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1389 - Sound. John Tyndall (1), 1873
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1389 - Sound. John Tyndall (2), 1873
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1389 - Sound. John Tyndall (3), 1873
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1389 - Sound. John Tyndall (6), 1873
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1380 - Espectáculo científico del Sr. Pertierra. Sala del Fonógrafo. La Ilustración Española Americana, 1894
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1379 - D'Acoustique. Rudolph Koenig (1), 1882
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1379 - D'Acoustique. Rudolph Koenig (2), 1882
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1379 - D'Acoustique. Rudolph Koenig (3), 1882
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1379 - D'Acoustique. Rudolph Koenig (4), 1882
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