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      Knowledge is Power

      Scientific American August 21, 1909

      How to Join Electric Wires

      Suggestions for the Amateur

      • August 21, 1909

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      More in the August 21, 1909 issue of Scientific American
      • Canning and Preserving Fruit.—III
      • Kieselgur or Infusorial Earth
      • Steam Turbines
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