Data for use in designing culverts and short-span bridges (1913)
Moorefield, Charles H. (Charles Henry), 1883-, United States. Bureau of Public Roads · Washington : U.S. Dept. of Agriculture, Office of Public Roads : G.P.O. · leaf 31
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Culverts Design · Bridges Design and construction
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
