| 其他書名 | Paper Presented at the Institute of African Studies, University of Nairobi, 6th January, 1987, at Jomo Kenyatta Memorial Library Room C32 |
| 出版 | Institute of African Studies, University of Nairobi, 1988 |
| URL | http://books.google.com.hk/books?id=uy4OAQAAMAAJ&hl=&source=gbs_api |