| 其他書名 | Assessment of Constraints and Potentials to Agriculture Production Systems in Nsokolo Watershed with Targets for Agroforestry Research and Development |
| 出版 | Agricultural University of Norway, 1990 |
| URL | http://books.google.com.hk/books?id=7DXNmAEACAAJ&hl=&source=gbs_api |