Locklin, David Philip, 1897-
Economics of transportation / David Philip Locklin - 6th ed. - Illinois : R. D. Irwin, 1966. - 882 p. ; 22 cm. - The Irwin series in economics .
Transportation--United States.
385 / LOE
Economics of transportation / David Philip Locklin - 6th ed. - Illinois : R. D. Irwin, 1966. - 882 p. ; 22 cm. - The Irwin series in economics .
Transportation--United States.
385 / LOE