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      Scientific American June 1924

      Getting Together on the Traffic Problem

      The April Conference, at Yale, of Those Expert in All Its Branches

      • June 1, 1924

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      More in the June 1924 issue of Scientific American
      • A Gasoline Engine that is Different, Electric Light Extremes and more
      • New Ideas of Prehistoric Flora, A Tree with Engineering Judgment and more
      • Railway Ties of Concrete for India's Railways, Disappearing Searchlight Towers and more
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