| 其他書名 | Address by Don Paarlberg, Assistant to the Secretary, U.S. Department of Agriculture, Before the Minnesota State Spring Barrow Show, Albert Lea, Minnesota, February 27, 1954, 1:30 P.m. CST |
| 出版 | U.S. Department of Agriculture, 1954 |
| URL | http://books.google.com.hk/books?id=3RNftwAACAAJ&hl=&source=gbs_api |