| 其他書名 | A Workshop Proceedings : Kelso, Washington, June 23-25, 1992 |
| 出版 | U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1996 |
| URL | http://books.google.com.hk/books?id=ujG91C9m_KgC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |