TY - BOOK AU - Locklin,D.Philip TI - Economics of transportation T2 - The Irwin series in economics AV - HE206 .L6 1972 U1 - 380.59 PY - 1966/// CY - Homewood, Ill. PB - R. D. Irwin KW - Transportation KW - United States KW - Railroads N1 - Includes bibliographies ER -