| 其他書名 | Based on a Study of Farms in Southwestern Iowa, Northeastern Kansas, Northwestern Missouri, and Southeastern Nebraska) |
| 出版 | Agricultural Experiment Station, Kansas State University of Agriculture and Applied Science, 1962 |
| URL | http://books.google.com.hk/books?id=U2tRAQAAMAAJ&hl=&source=gbs_api |