Proceedings, 11th IRF world meeting : 16 - 21 April 1989 Seoul, Korea; issues and challenges in the world of roads ; Vol. 5: Traffic, safety and environmental considerations
Circulation, sécurité routière et environnment
World meeting. International Road Federation ; 11 ; 1989 ; Seoul, Korea World meeting. International Road Federation ; 11 (Seoul, Korea) : 1989.04.16-21
1989
181 S.
Ill., graph. Darst.
Conference Proceedings
English
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