| 其他書名 | Environmental Strategies for the 1990s |
| 出版 | Department of Geographical & Environmental Sciences [and] Indicator Project South Africa, University of Natal, 1990 |
| ISBN | 08698072859780869807286 |
| URL | http://books.google.com.hk/books?id=HCbUAAAAMAAJ&hl=&source=gbs_api |