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      Knowledge is Power

      Scientific American December 13, 1913

      The Problem of River Crossing in New York City Traffic

      The Tunnel System and the Railway Terminals

      • By G. F. Kunz on December 13, 1913

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      More in the December 13, 1913 issue of Scientific American
      • A Recently Installed Fatigue Testing Machine
      • The Dörwald Heat Engine
      • Vanadium Steel Main and Side Rods
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