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      Knowledge is Power

      Scientific American May 1924

      Rotary Car-Dumping on a Giant Scale, Determining the Fire Hazards in a Forest and more

      • May 1, 1924

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      More in the May 1924 issue of Scientific American
      • The Grocery on Wheels
      • When, Where, Why?
      • Post-Treaty Standing of the World's Navies
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