| 其他書名 | A Report of the Proceedings of a Conference Called by the Commissioner of Education, Washington, D.C., June 17, 18, and 19, 1935 |
| 出版 | U.S. Government Printing Office, 1935 |
| URL | http://books.google.com.hk/books?id=x4FyR8ZCfy4C&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |