| 其他書名 | A History and Evaluation of the Kentucky Geological Survey--U.S. Geological Survey Mapping Program, 1960-1978 |
| 出版 | U.S. Department of the Interior, Geological Survey, 1981 |
| URL | http://books.google.com.hk/books?id=kLMjjyS_IZsC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |