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      Knowledge is Power

      Scientific American June 1926

      Oil Engine in a New Field

      Performance of Powerful Diesel-Electric Dredge, Port of Portland

      • June 1, 1926

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      More in the June 1926 issue of Scientific American
      • Eavesdropping on the Arctic
      • Mileage Goes Up in Smoke
      • Prodigal Mother Nature
      View Full Contents
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