| 其他書名 | An Economic Consideration of the Pottery, Brick, and Tile Clays, Fire Clays, and Shales of Kentucky, with Notes on Their Industrial Development |
| 出版 | Kentucky Geological survey, 1922 |
| URL | http://books.google.com.hk/books?id=7mVCAQAAMAAJ&hl=&source=gbs_api |