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      Knowledge is Power

      Scientific American September 1917

      The Heavens In September, 1917

      The Finest Objects in the Sky

      • By Henry Norris Russell on September 1, 1917

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      More in the September 1917 issue of Scientific American
      • The Submarine Problem--XIII
      • Correspondence- September 1, 1917
      • Rice Yield Ruined
      View Full Contents
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