| 其他書名 | A Handbook Prepared for and Approved by National Council of Chief State School Officers, Developed at Work-conferences, Yale University and Washington, D.C., 1942 |
| 出版 | Traffic engineering & safety department, American automobile association, 1942 |
| URL | http://books.google.com.hk/books?id=l01QAQAAIAAJ&hl=&source=gbs_api |