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      Knowledge is Power

      Scientific American July 03, 1915

      The Defenses of Constantinople

      Ample Preparations That Have Been Made by Turkey to Resist Invasion

      • By H. Charles Woods on July 3, 1915

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      More in the July 03, 1915 issue of Scientific American
      • Italy and Engineering
      • Principles of Coal Sampling
      • Volatile Matter, Fixed Carbon and Sulphur in Coal
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