| 其他書名 | Hearings Before the United States Senate Committee on the District of Columbia, Seventy- First Congress, Second Session, on Mar. 13, 21, 1930 |
| 出版 | U.S. Government Printing Office, 1930 |
| URL | http://books.google.com.hk/books?id=brtFAQAAMAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |