Implementation strategies for sign retroreflectivity standards
| Váldodahkki: | |
|---|---|
| Searvvušdahkkit: | , |
| Eará dahkkit: | , |
| Materiálatiipa: | Girji |
| Giella: | eaŋgalasgiella |
| Almmustuhtton: |
Washington, D.C.
Transportation Research Board, National Research Council
[1992]
|
| Ráidu: | Report (National Cooperative Highway Research Program)
346. |
| Fáttát: |


