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      Knowledge is Power

      Scientific American August 20, 1887

      New Process of Metal Working of Messrs. N. De Benardos and S. Olszewski

      • August 20, 1887

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      More in the August 20, 1887 issue of Scientific American
      • Daniel E. Salmon, D.V.M.
      • New Driving Gear for Dynamos
      • The Nine Hundred and Eighty-Four Foot Tower at Paris
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