| 其他書名 | 12th Annual Conference to be Held on Friday, 3rd, Saturday 4th and Sunday 5th January, 1964, in the University of Khartoum; Written Contributions |
| 出版 | Philos. Soc. of the Sudan, 1964 |
| URL | http://books.google.com.hk/books?id=23s_QwAACAAJ&hl=&source=gbs_api |