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      Celebrate Math Awareness Month

      Scientific American September 02, 1916

      Industrial Preparedness for Peace

      Obtaining Potash from Kelp

      • By Monroe Woolley

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      More in the September 02, 1916 issue of Scientific American
      • Artisans of the Motion Picture Films
      • New Types of Artificial Arms for Victims of the War
      • Blazing a Trail for the Industries
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