| 其他書名 | A Preliminary Study of the Big Clifty Sandstone Member of the Golconda Formation (Mississippian) in Butler County and Parts of Edmonson, Grayson, Logan, and Warren Counties |
| 出版 | Kentucky Geological Survey, 1982 |
| URL | http://books.google.com.hk/books?id=TZ1RAQAAIAAJ&hl=&source=gbs_api |