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      Knowledge is Power

      Scientific American July 27, 1918

      A Home-made Telescope

      A Simple and Practical Instrument for Amateur Observers

      • By Vera M. Gushee on July 27, 1918

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      More in the July 27, 1918 issue of Scientific American
      • An Educated Ape
      • Electrolysis Mitigation—II
      • Pearl Shell Industry in Australia
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