| 其他書名 | An Application of the Willingness-to-pay Approach to Dam and Irrigation Projects in Nigeria |
| 出版 | Nigerian Institute of Social and Economic Research, 1992 |
| ISBN | 97818100929789781810091 |
| URL | http://books.google.com.hk/books?id=Lke40AEACAAJ&hl=&source=gbs_api |