Some economic effects of highway improvement presented at the Thirty-second Annual Meeting, January 13-16, 1953.
| Awdur Corfforaethol: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Washington
Highway Research Board
1953.
|
| Cyfres: | Highway Research Board
Bulletin 67. |
| Pynciau: |