| 其他書名 | Proceedings of the Technical Meeting, Colorado Springs, Colorado, September, 20-24, 1993 |
| 出版 | Department of the Interior, U.S. Geological Survey, 1996 |
| URL | http://books.google.com.hk/books?id=jD0qBQpYKqQC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |