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      Spring Flash Sale

      Scientific American May 18, 1918

      Seeing but not Seen

      What Our Camoufleurs are Learning Day by Day in Their Newly-Found Art
      Photographs Copyrighted by Underwood & Underwood
      [article on battlefield camouflage]

      • May 18, 1918

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      More in the May 18, 1918 issue of Scientific American
      • The Port of Providence
      • Correspondence- May 18, 1918
      • The Service of the Chemist- May 18, 1918
      View Full Contents
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