| 其他書名 | Proceedings of a Conference Held in Columbia, Missouri, March 4-5, 1999 |
| 出版 | U.S. Department of Agriculture, Forest Service, North Central Research Station, 2004 |
| URL | http://books.google.com.hk/books?id=_U8FmRNLDrMC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |