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      Knowledge is Power

      Scientific American April 10, 1920

      What Types of Drives are Used in Motor Trucks?

      • By George W. Grupp on April 10, 1920

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      More in the April 10, 1920 issue of Scientific American
      • Is the Fabricated Ship a Success?
      • Something New in Fluorescent Screens for Radioscopic Work, Where there is no Sugar Shortage and more
      • Correspondence - April 10, 1920
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