| 其他書名 | A Summary of Activities and Programs of the U.S. Geological Survey's Water Resources Division. 1986 |
| 出版 | Department of the Interior, U.S. Geological Survey, 1984 |
| URL | http://books.google.com.hk/books?id=jZYc4yNKP_YC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |