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      Knowledge is Power

      Scientific American August 31, 1918

      Substitutes for Wheat

      Employed in Making Bread for the French Army

      • August 31, 1918

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      More in the August 31, 1918 issue of Scientific American
      • How can Soft Coal be Burned without Smoke in Marine Boilers?
      • Position-Light Signals for Railroad Service
      • The Ornithopter
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