1. BPR program (series). HY-2. [Electronic computer program for] hydraulic analysis of pipe-arch culverts; developed by Engineering Services Division, Office of Development in cooperation with Bridge Division, Office of Engineering. Bookmark Corporate/Agency Authors: Public Roads Bureau and Transportation Dept. Publisher: Public Roads Bureau Date: Revised Oct. 1970. [1970.] SuDoc number: TD 2.117:HY-2/3