| 其他書名 | Final Report : Prepared for U.S. Department of Transportation, Office of Transportation Economic Analysis, Washington, D.C. |
| 出版 | Tufts University ; Springfield, Va. : available through the National Technical Information Service, 1973 |
| URL | http://books.google.com.hk/books?id=SVZALnmCxmIC&hl=&source=gbs_api |