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      Knowledge is Power

      Scientific American December 16, 1916

      Experiments in the Cultivation of the Cork Tree in Sardinia

      • December 16, 1916

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      More in the December 16, 1916 issue of Scientific American
      • A New Portable Accumulator
      • High versus Low Antennae in Radio Telegraphy and Telephony
      • The Intermittent Annual Growth of Woody Plants
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