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      Knowledge is Power

      Scientific American April 1928

      Note for Telescope Enthusiasts, Diesel Ship Tests Show Good Results and more

      A Review of the Newest Developments tn Science, Industry and Engineering

      • April 1, 1928

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      More in the April 1928 issue of Scientific American
      • A Mountain That Will Fall
      • From the Scrap-book of Science--Camera Shots of Scientific Events, April 1928
      • Lawn Shaver, Powerful Pruner and more
      View Full Contents
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