| 其他書名 | Historical Overview, Extent of Their Application, and Their Effects on Sustainability of Ecosystems |
| 出版 | U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1994 |
| URL | http://books.google.com.hk/books?id=XddHrFn5Hb4C&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |