| 其他書名 | A Compilation Showing Mileage of Improved and Unimproved Roads, Sources and Amounts of Road Revenues, Bonds Issued and Outstanding, and a Description of the Systems of Road Administration and Fiscal Management, and of Other Factors Affecting Road Improvement in Each State |
| 出版 | U.S. Department of Agriculture, 1916 |
| URL | http://books.google.com.hk/books?id=xxIR0QEACAAJ&hl=&source=gbs_api |