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Title page for 'Harmonices Mundi' (The Harmony of the World, 1619) by German mathematician and astronomer Johannes Kepler (1571-1630). From his study of musical harmony, Kepler developed his third law of planetary motion across five books and an appendix, listed here in Latin. The first and second books were on geometry and solids (architectonics), the third on musical harmonies, the fourth on metaphysics, psychology and astrology, and the fifth on astronomical metaphysics (the harmonic motions of the Solar System). This work was published in Linz, Austria, by Gottfried Tambach and Johann Planck.
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