Manual on uniform traffic control devices for streets and highways.
| 企业作者: | |
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| 格式: | 图书 |
| 语言: | English |
| 出版: |
Washington, D.C.
U.S. Dept. of Transportation, Federal Highway Administration For sale by the Supt. of Docs., U.S. G.P.O.
1988 [i.e. 1989]
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| 版: | 1988 ed. |
| 主题: |