| 其他書名 | A Compilation of Results of Research Conducted at Midwest Claypan Experiment Farm, McCredie, Mo., 1937-1962 |
| 出版 | Agricultural Research Service, U.S. Department of Agriculture, 1968 |
| URL | http://books.google.com.hk/books?id=n6IoAAAAYAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |