Pavement-marking materials presented at the 31st annual meeting, January, 1952.
| Awdur Corfforaethol: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Washington
The Board
1952.
|
| Cyfres: | Highway Research Board
Bulletin 57. National Research Council. Publication 239. |
| Pynciau: |