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      Knowledge is Power

      Scientific American April 29, 1916

      Economy in Study—II

      Educative Imagination

      • By George Van N. Dearborn on April 29, 1916

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      More in the April 29, 1916 issue of Scientific American
      • Nickel Plating Aluminium
      • The Dangers of Rubber Manufacture
      • Alloy of Nickel and Tantalum
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