Continuing project to synthesize information on highway problems.
| 企業作者: | |
|---|---|
| 格式: | 圖書 |
| 語言: | English |
| 出版: |
Washington, D.C.
Transportation Research Board, National Research Council
[1997]
|
| 叢編: | Research results digest (National Cooperative Highway Research Program)
no. 219. |
| 主題: |