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      Knowledge is Power

      Scientific American March 16, 1912

      A Proposed Expedition to Crocker Land

      American Explorers to Investigate the North Polar Regions

      • March 16, 1912

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      More in the March 16, 1912 issue of Scientific American
      • Directed Radio-teleǵraphy without Vertical Antennæ
      • Natural Selection in Man
      • The Deutsch Aero-Dynamic Institute, Paris
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