| 其他書名 | April 10-12, 1994, State Parks Management and Research Institute, Saratoga Springs, New York |
| 出版 | U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1994 |
| URL | http://books.google.com.hk/books?id=4737zVqNgLoC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |