Dawson, R. F. F. An analysis of the cost of road improvement schemes - London : H.M. Stat. Off., 1961 - 23 p. - Road research technical paper ; no. 50 . - Road Research Laboratory. Road research technical paper ; no. 50 . Subjects--Topical Terms: Roads--FinanceRoads--Maintenance and repair LC Class. No.: TE7 / H33 no.50