Official proceedings - Fifth International Conference on Urban Transportation, Pittsburgh, Pennsylvania, September 8 - 10, 1971 : "Mobility: the fifth freedom"
International Conference on Urban Transportation ; 5 ; 1971 ; Pittsburgh, Pa. International Conference on Urban Transportation ; 5 (Pittsburgh, Pa.) : 1971.09.08-10
1971
VI, 207 S.
Ill.
Conference Proceedings
English