| 其他書名 | Annual Estimates by States, Major Geographic Divisions, and Regions, 1920-50 and for the United States, 1910-50 |
| 出版 | U.S. Department of Agriculture, Agricultural Marketing Service, 1956 |
| URL | http://books.google.com.hk/books?id=SAlUAQAACAAJ&hl=&source=gbs_api |