Reinforced concrete pipe culverts :
criteria for structural design and installation /
by the Bridge Division, Office of Engineering and Operations, Bureau of Public Roads ; reported by Merrill Townsend.
APA Citation
United States. Bureau of Public Roads. Bridge Division. Reinforced concrete pipe culverts: criteria for structural design and installation. Washington: U.S. Dept. of Commerce, Bureau of Public Roads.
MLA Citation
United States. Bureau of Public Roads. Bridge Division. Reinforced Concrete Pipe Culverts: Criteria for Structural Design And Installation. Washington: U.S. Dept. of Commerce, Bureau of Public Roads,
Warning: These citations may not always be complete (especially for serials).