Roads and the urban environment : proceedings of the Symposium on Roads and the Urban Environment held at the Ministry for Public Works in Madrid on 14th, 15th and 16th October 1974. - 189 pages : illustrations ; 27 cm - Road research . Includes bibliographical references. ISBN: 9264113851 LCCN: 76353886 Nat. Bib. No.: F*** Subjects--Topical Terms: Roads--Environmental aspects--CongressesAutomobiles--Motors (Diesel)--Exhaust gas--CongressesTraffic noise--Congresses. LC Class. No.: TE153 / .S96 1974