| 其他書名 | Barriers and Incentives : a Conservation Effects Assessment Bibliography |
| 出版 | U.S. Department of Agriculture, Agricultural Research Service, National Agricultural Library, Water Quality Information Center, 2004 |
| URL | http://books.google.com.hk/books?id=SycNAQAAMAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |