| 其他書名 | With Special Attention to Its Relation to Number of Farms and Number of Agricultural Workers |
| 出版 | U.S. Department of Commerce, Bureau of the Census, 1960 |
| URL | http://books.google.com.hk/books?id=zWe2vh3IEO4C&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |