TY  - BOOK
AU  - Herr, Lester A., coaut.Bossy, Herbert G., coaut.
ED  - Department of Commerce. Bureau of Public Roads (Estados Uni-dos).
TI  - Hydraulic charts for the selection of highway culverts / pr-epared by Lester A. Herr in collaboration with Herbert G. B-ossy
CY  - Washington, D.C. : Government Printing Office
ER  -