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      Knowledge is Power

      Scientific American June 18, 1921

      What is the Trouble with the Railroads?

      An Analysis of the Business Done by Our Transportation Systems, and the Rates They Are Charging for It

      • By Charles Frederick Carter on June 18, 1921

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      More in the June 18, 1921 issue of Scientific American
      • Correspondence
      • The Motor-Driven Commercial Vehicle
      • Facts About Concrete
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