Ashton, Winifred Diana. The theory of road traffic flow / Winifred D. Ashton - London : New York : Methuen ; Wiley, 1966. - viii, 178 p. : tables, diagrs. ; 23 cm - Methuen's monographs on applied probability and statistics . Includes Bibliography: p. 169-174 and index. Subjects--Topical Terms: Traffic engineering--Mathematical models Dewey Class. No.: 388.310184 / AST 1966