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      Knowledge is Power

      Scientific American August 10, 1912

      A Museum of underground Life

      And the “New Grotto” at Adelsberg

      • August 10, 1912

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      More in the August 10, 1912 issue of Scientific American
      • Iron, Vanadium and Carbon in Steel
      • Langley's Book on Aviation
      • The Cryogenic Laboratory at Leyden
      View Full Contents
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