(1973). Highway planning: Proceedings of the seminar on Highway Planning held during the PTRC Summer Annual Meeting, 25-29 June 1973, at the University of Sussex, England. London: Planning and Transport Research and Computation.

Highway Planning: Proceedings of the Seminar On Highway Planning Held During the PTRC Summer Annual Meeting, 25-29 June 1973, At the University of Sussex, England. London: Planning and Transport Research and Computation, 1973.

Highway Planning: Proceedings of the Seminar On Highway Planning Held During the PTRC Summer Annual Meeting, 25-29 June 1973, At the University of Sussex, England. London: Planning and Transport Research and Computation, 1973.