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      Knowledge is Power

      Scientific American February 02, 1918

      Scenes at the Coal Mines and some Transportation Problems

      • February 2, 1918

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      More in the February 02, 1918 issue of Scientific American
      • Anomalies of the Animal World—Part VII
      • Exhaust Steam Waste
      • New Zoological Specimens found in India
      View Full Contents
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