| 其他書名 | Hearings Before the United States House Committee on Education and Labor, Ninetieth Congress, First Session, on H.R. 6230 |
| 出版 | U.S. Government Printing Office, 1967 |
| URL | http://books.google.com.hk/books?id=yrtFAQAAMAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |