| 其他書名 | A Study of the Population of Selected Districts in New York, Chicago, Philadelphia, Boston, Cleveland, Buffalo, and Milwaukee |
| 出版 | U.S. Government Printing Office, 1911 |
| URL | http://books.google.com.hk/books?id=XWsWAAAAYAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |