Road user and vehicle characteristics 4 reports.
| Egile korporatiboa: | , , , , |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
Washington, D.C.
Highway Research Board
1967.
|
| Saila: | Highway research record
no. 159. Publication (National Research Council (U.S.)) no. 1436. |
| Gaiak: |