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      Digital & 4-Year Archive

      Scientific American February 13, 1909

      What is the Electron Theory?

      A Simple and Lucid Explanation

      • By L. Graetz on February 13, 1909

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      More in the February 13, 1909 issue of Scientific American
      • Electrical Notes
      • Tacoma's Experience with its Power Plant
      • A New Development in the Art of Indirect Color Photography
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