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      Knowledge is Power

      Scientific American September 04, 1909

      How to Make a Simple Electric Engine

      • By Robert H. Brockman on September 4, 1909

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      More in the September 04, 1909 issue of Scientific American
      • A Sanitary Drainage Canal for Buffalo
      • Home-Grown Calabash Gourds
      • Measuring a River's Flow
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