Urban traffic models : possibilities for simplification : a report / prepared by an OECD road research group. - 127 pages : illustrations ; 28 cm - Road research . ISBN: 9264112499 : $5.00 (U.S.) LCCN: 75312177 Nat. Bib. No.: F*** Subjects--Topical Terms: Traffic engineering--Mathematical models.Urban transportation--Mathematical models. LC Class. No.: HE333 / .O74 1974