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      Scientific American June 29, 1912

      An International Exhibition of the Building Trades at Leipsic in 1913, Railway Building in German East Africa

      • June 29, 1912

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      More in the June 29, 1912 issue of Scientific American
      • Recently Patented Inventions- June 29, 1912
      • Battle-Cruisers for the United States Navy, Emergency Cars for Stranded Motorists and more
      • The Galveston Causeway
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