| 其他書名 | Hearing Before the Subcommittee on Census and Population of the Committee on Post Office and Civil Service, House of Representatives, One Hundred Second Congress, First Session, March 12, 1991 |
| 出版 | U.S. Government Printing Office, 1991 |
| URL | http://books.google.com.hk/books?id=BqkaAQAAMAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |