Highway engineering economy :
a syllabus.

APA Citation

Winfrey, R., United States. Federal Highway Administration. Office of Traffic Operations. (1973). Highway engineering economy: a syllabus. [Washington, D.C.]: U.S. Dept. of Transportation, Federal Highway Administration, Office of Traffic Operations.

MLA Citation

Winfrey, Robley, 1899-, and United States. Federal Highway Administration. Office of Traffic Operations. Highway Engineering Economy: a Syllabus. [Washington, D.C.]: U.S. Dept. of Transportation, Federal Highway Administration, Office of Traffic Operations, 1973.