| 其他書名 | Delaware, District of Columbia, Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia, West Virginia |
| 出版 | U.S. Department of Agriculture, Forest Service, Northern Research Station, 2009 |
| URL | http://books.google.com.hk/books?id=x_ne_P7pdyMC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |