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.
Citación estilo ChicagoNational Research Council (Estados Unidos). Highway Research Board, y 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.
Cita MLANational Research Council (Estados Unidos). Highway Research Board, y 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.