| 其他書名 | Symposium on Sustainable Management of Hemlock Ecosystems in Eastern North America, June 22-24, 1999, Durham, New Hampshire |
| 出版 | U.S. Department of Agriculture, Forest Service, Northeastern Research Station, 2000 |
| URL | http://books.google.com.hk/books?id=mcD32_bl7OkC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |