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      Knowledge is Power

      Scientific American October 15, 1904

      The Mining Exhibits at St. Louis Fair

      By the St. Louis Correspondent of the Scientific American

      • By St. Louis on October 15, 1904

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      More in the October 15, 1904 issue of Scientific American
      • Electrical Notes
      • Science Notes
      • The Radiation and Emanation of Radium
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