| 其他書名 | A Revolutionary Force in American Agriculture |
| 出版 | U.S. Department of Agriculture, Economic Research Service, Agriculture and Rural Economy Division, 1994 |
| URL | http://books.google.com.hk/books?id=0tl9k0xdi5UC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |