| 其他書名 | A Description of the Functions, Organization, and Operation of the Bureau of Agricultural Economics, Issued for the Use of the Staff |
| 出版 | U.S. Department of Agriculture, Bureau of Agricultural Economics, 1939 |
| URL | http://books.google.com.hk/books?id=KTVNAQAAMAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |