Highway construction and maintenance/ by Seminar on Highway Construction and Maintenance (1989 : University of Sussex), PTRC Transport and Planning Summer Meeting (17th : 1989 : University of Sussex)

Transport in developing countries by Seminar on Transport in Developing Countries (1989 : University of Sussex), PTRC Transport and Planning Summer Meeting (17th : 1989 : University of Sussex)

Environmental issues by Seminar on Environmental Issues (1989 : University of Sussex), Planning and Transport Research and Computation International Association, PTRC Transport and Planning Summer Meeting (17th : 1989 : University of Sussex)

Mobilising resources for transport development by Seminar on Mobilising Resources for Transport (1989 : University of Sussex), Planning and Transport Research and Computation International Association, PTRC Transport and Planning Summer Meeting (17th : 1989 : University of Sussex)

Transportation planning methods by Seminar on Transportation Planning Methods (1989 : University of Sussex), Planning and Transport Research and Computation International Association, PTRC Transport and Planning Summer Meeting (17th : 1989 : University of Sussex)

Transport for people with a mobility handicap by Seminar on Transport for People with a Mobility Handicap (1989 : University of Sussex), Planning and Transport Research and Computation International Association, PTRC Transport and Planning Summer Meeting (17th : 1989 : University of Sussex)