Ramsbottom, D. Culvert design manual / D. Ramsbottom, R. Day, C. Rickard - London: Construction Industry Research and Information Association, 1997 (Rep. 2003) - 190 p.: ill.; 30 cm. - CIRIA project report; 168 . Includes references (p. 187-189) ISBN: 0860174670 Subjects--Topical Terms: Culverts--Design and construction