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      Scientific American April 29, 1911

      The Discovery of Kepler's Laws

      An Epoch-making Astronomical Achievement

      • April 29, 1911

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      More in the April 29, 1911 issue of Scientific American
      • Eugenics and Genetics
      • International Standard Time
      • The Mercadier System of Multiplex Teleǵraphy, French Studies of Insecticides
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