Standard specifications for road and bridge construction.
Description
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Item Link | Original Source |
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Limited (search only) 1938 | University of Illinois at Urbana-Champaign |
Limited (search only) 1948 | University of Illinois at Urbana-Champaign |
Limited (search only) 1956 | University of Illinois at Urbana-Champaign |
Limited (search only) 1960 sup. | University of Illinois at Urbana-Champaign |