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      Knowledge is Power

      Scientific American April 25, 1908

      The Practical Work of the United States Bureau of Forestry

      • By Day Allen Willey on April 25, 1908

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      More in the April 25, 1908 issue of Scientific American
      • A Simple Apparatus for Generating Hydrogen
      • Improvement of the American Merchant Marine
      • The British Naval Programme for 1908
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