Roundabouts in the United States
| Ngā kaituhi rangatōpū: | , , |
|---|---|
| Ētahi atu kaituhi: | |
| Hōputu: | Pukapuka |
| Reo: | Ingarihi |
| I whakaputaina: |
Washington, D.C.
Transportation Research Board
2007.
|
| Rangatū: | Report (National Cooperative Highway Research Program)
572. |
| Ngā marau: | |
| Urunga tuihono: | Table of contents only OCLC Digital Archive |