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      Knowledge is Power

      Scientific American December 29, 1917

      Making Concrete Tell its Story, Steel Shells from Steel Castings, and more

      • By C. H. Claudy on December 29, 1917

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      More in the December 29, 1917 issue of Scientific American
      • Strategic Moves of the War, December 19th, 1917
      • Naval and Military- December 29, 1917
      • New Developments in Training Wartime Sailors
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