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      Celebrate Math Awareness Month

      Scientific American February 23, 1918

      The War Behind the Front, Alien Crews on Our Merchantships, and more

      [Lead editorial is about the perceived German propaganda efforts worldwide]

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      More in the February 23, 1918 issue of Scientific American
      • The Three-Decker and the Dreadnought
      • Guide Carriage for Laying Large Sewage Concrete Pipes in Tunnels
      • Strategic Review of the War, February 12th, 1918
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