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      Scientific American December 02, 1916

      Allotropic Changes in Iron and other Metals

      A New Thermo-Electric Method of Studying Structural Conditions Not Yet Fully Understood

      • By Carl Benedicks on December 2, 1916

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      More in the December 02, 1916 issue of Scientific American
      • Observations on the Economy of the House Spider, Tegenaria Atrica
      • The United States Lighthouse Service—II
      • An Apparatus for Strengthening the Lungs and Improving Respiration
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