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      Knowledge is Power

      Scientific American December 1923

      Our Point of View, December 1923

      Radio in the Frozen North

      • December 1, 1923

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      More in the December 1923 issue of Scientific American
      • A Wheelless Motor-Car
      • Copenhagen-Bornholm Wireless Telephone Service
      • Metering Water by the Wholesale, Pulling Down a Church Steeple With a Motor Winch and more
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