| 其他書名 | Called by the Commissioner of Education of the United States, and Held in the City of Washington, December 31, 1915 |
| 出版 | U.S. Government Printing Office, 1917 |
| URL | http://books.google.com.hk/books?id=yBM_AQAAMAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |