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      Scientific American April 08, 1911

      A New Method of Exploring the Earth's Interior

      • By Schames on April 8, 1911

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      More in the April 08, 1911 issue of Scientific American
      • Alloys for Permanent Magnets, Effect of Paris Flood on Electrical Machinery
      • Potash Salts: Light on an International Controversy—II
      • Breakwaters on the West Coast of Jutland
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