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      Knowledge is Power

      Scientific American March 1924

      Laying the Ghost of a War-Time Trouble

      The Present Status of Our Potash Industry, and the Outlook for Ultimate Independence

      • By Guy E. Mitchell on March 1, 1924

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      More in the March 1924 issue of Scientific American
      • Elasticity and High Speeds
      • Keeping Open Our Harbor Channels
      • The Size of Stars, Novel Gadget for the House-Painter and more
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