| 其他書名 | Results of Investigations, 1987-91 |
| 出版 | U.S. Geological Survey, 1999 |
| 主題 | Technology & Engineering / Environmental / Water Supply |
| ISBN | 06079226219780607922622 |
| URL | http://books.google.com.hk/books?id=C0IlAQAAIAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |