| 其他書名 | Hearings Before the Committee on Science and Technology, U.S. House of Representatives, Ninety-seventh Congress, First Session |
| 出版 | U.S. Government Printing Office, 1981 |
| URL | http://books.google.com.hk/books?id=exXWAAAAMAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |