| Type |  Book |
| ชื่อเรื่อง | A Report covering an international survey of current research and development on roads and road transport / prepared for the Federal Highway Administration [by] International Road Federation |
| พิมพลักษณ์ | Washington, D.C. : International Road Federation, 1970 |
| รูปเล่ม | 645 p. : ill |
| หัวเรื่อง | Highway research |
| | Traffic engineering |
| | Transportation, Automotive |