| 其他書名 | U.S. National Arboretum Plant Introduction : Gardens Unit |
| 出版 | U.S. National Arboretum, U.S. Department of Agriculture, Agricultural Research Service, 1998 |
| URL | http://books.google.com.hk/books?id=lmtNEdeRBQwC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |