| 标题 |
A New Method for Computing the Mean Center of Population of the United States |
| 网址 | |
| DOI | |
| 其它 |
期刊:The Professional Geographer 作者:Edward Aboufadel; David Austin 出版日期:2006-01-26 |
| 求助人 | |
| 下载 |
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(2025-6-4)