| 其他書名 | A Study of Representative Farms in the Crop-livestock Farming Area of the Lower Ohio Valley, Kentucky, 1942-1946 |
| 出版 | Kentucky Agricultural Experiment Station, University of Kentucky, 1947 |
| URL | http://books.google.com.hk/books?id=mN1PAQAAMAAJ&hl=&source=gbs_api |