A policy on uniform distress signals for motorists on freeways
developed by Committee on Planning and Design Policies, AASHO ... ; adopted December 22, 1961 by the American Association of State Highway Officials
Bok Engelsk 1962
| Utgitt | Washington, D.C. : AASHO , c1962
|
|---|---|
| Omfang | 6 s.
|
| Emner |
