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      Celebrate Math Awareness Month

      Scientific American October 25, 1919

      Epidemiology and Recent Epidemics

      Suppressing Epidemics by Fighting the Disease at its Source

      • By Simon Flexner

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      More in the October 25, 1919 issue of Scientific American
      • Catalytic Dehydrogenation by Nickel in Presence of Hydrogen, On Whole Numbers for Atomic Weights, and Related Questions
      • Refinements in Turbine Design
      • Spectral Structure of the X-Rays
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