| 其他書名 | Final, General Management Plan, Environmental Impact Statement |
| 出版 | U.S. Department of the Interior, National Park Service, Denver Service Center, 1997 |
| URL | http://books.google.com.hk/books?id=SwyXjCDDV-QC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |