Hoyt, Charles Hamilton, Burr, William H. (William Hubert), 1851-1934, United States. Bureau of Public Roads · Washington : U.S. Dept. of Agriculture, Office of Public Roads : G.P.O. · leaf 23
Fig. 2.—A Better Type of Culvert. Bui. 43, Office of Public Roads, U. S. Dept. of Agriculture. Plate VI. … J £/l 2;AU|6 Ifta| J0-J \f-l y-^-Z \f-,l\f;l - ^WA^ E ?\^.P£\?Y~
Bridges Design and construction · Culverts
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