| 其他書名 | Report of the 1983 El Portal Archaeological Project |
| 出版 | Yosemite Research Center, Yosemite National Park, National Park Service, U.S. Department of the Interior, 1987 |
| URL | http://books.google.com.hk/books?id=DV9yAAAAMAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |