TY - BOOK ED - United States. TI - Public aids to transportation..: Published after expiriation of Emergency railroad transportation act, 1933. Section of research, Federal coordinator of transportation U1 - 385 PY - 1938///-40 CY - Washington PB - U.S. Govt. print. off. KW - Transportation KW - United States KW - Aeronautics, Commercial KW - Railroads KW - Inland navigation KW - Transportation, Automotive KW - MCE ER -