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      Scientific American July 20, 1918

      Bulb Growing in the United States

      A California Farm That Rivals the Best in Holland

      • By Arthur H. Dahl on July 20, 1918

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      More in the July 20, 1918 issue of Scientific American
      • Ironing Out Cracks in Iron
      • Russia's Industrial Losses
      • The Scientific Basis of Rationing
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