Changes in legal vehicle weights and dimensions some economic effects on highways
| Awduron Eraill: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Washington, D.C.
Highway Research Board, National Research Council
1973.
|
| Cyfres: | Report (National Cooperative Highway Research Program)
141. |
| Pynciau: |