Technological trends in transportation.
Subtitle: Letter
By: from the Board of investigation and research, transmitting a report on technological trends in transportation ...
Series: United States.  79th Cong., 1st sess.  Senate.  Doc -- 76
Publisher: U.S. Govt. print. off.
Published: 1945
Place of publication: Washington
Language: eng
Number of pages: 168
Subjects: Transportation -- History; Transportation -- United States