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      Knowledge is Power

      Scientific American January 09, 1892

      The Dynamos at Frankfort Exhibition

      • By W. B. Esson on January 9, 1892

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      More in the January 09, 1892 issue of Scientific American
      • Azoimide, N3H—The New Sodium Salt—The Most Highly Explosive Substance Known
      • How to Harness and Unharness a Horse
      • The Cushioned Car Wheel
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