Roadside safety improvement programs on freeways a cost-effectiveness priority approach
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| 企业作者: | , |
| 格式: | 图书 |
| 语言: | English |
| 出版: |
Washington, D.C.
Transportation Research Board, National Research Council
1974.
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| 丛编: | Report (National Cooperative Highway Research Program)
148. |
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