| 其他書名 | An Informal Proposal to the World Bank for Case Studies to Estimate Natural Resource Degradation and Identify Causes in Selected Developing Countries |
| 出版 | Winrock International Institute for Agricultural Development, 1989 |
| URL | http://books.google.com.hk/books?id=0uokpwAACAAJ&hl=&source=gbs_api |