National Research Council (Estados Unidos). Highway Research Board, & National Research Council (Estados Unidos). Highway Research Board. (1974). Innovations in constructin and maintenance of transportation facilities: Proceedings of the sixth summer meeting on the Highway Research Board ... --. Washington: Transportation Research Board. National Research Council.
Chicago Style CitationNational Research Council (Estados Unidos). Highway Research Board, and National Research Council (Estados Unidos). Highway Research Board. Innovations in Constructin and Maintenance of Transportation Facilities: Proceedings of the Sixth Summer Meeting On the Highway Research Board ... --. Washington: Transportation Research Board. National Research Council, 1974.
MLA CitationNational Research Council (Estados Unidos). Highway Research Board, and National Research Council (Estados Unidos). Highway Research Board. Innovations in Constructin and Maintenance of Transportation Facilities: Proceedings of the Sixth Summer Meeting On the Highway Research Board ... --. Washington: Transportation Research Board. National Research Council, 1974.