Social, economic, and environmental factors of transportation 20 reports.
| 企业作者: | |
|---|---|
| 格式: | 图书 |
| 语言: | English |
| 出版: |
Washington, D.C.
Highway Research Board, National Research Council
c1971.
|
| 丛编: | Highway research record
no. 356. |
| 主题: |