| 其他書名 | A Description of the Procedure Used in Making a Functional Grouping of the Counties of the United States |
| 出版 | U.S. Government Printing Office, 1951 |
| 主題 | Mathematics / Probability & Statistics / General |
| ISBN | 05985909199780598590916 |
| URL | http://books.google.com.hk/books?id=bNuPNNGMAqwC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |