| 其他書名 | A Report to the Botswana Department of Wildlife and National Parks on the Value and Utilization of Wildlife in Botswana |
| 出版 | Botswana Department of Wildlife and National Parks, 1973 |
| URL | http://books.google.com.hk/books?id=qciSzQEACAAJ&hl=&source=gbs_api |