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      Knowledge is Power

      Scientific American December 02, 1916

      Is Vegetarianism Based on Sound Science?

      Theories and Results Briefly Reviewed

      • By M. Helen Keith on December 2, 1916

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      More in the December 02, 1916 issue of Scientific American
      • Allotropic Changes in Iron and other Metals
      • Observations on the Economy of the House Spider, Tegenaria Atrica
      • The United States Lighthouse Service—II
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