| 其他書名 | Hearings Before the Subcommittee on Space Science and Applications of the Committee on Science and Astronautics, U.S. House of Representatives, Ninety-third Congress, Second Session, on H.R. 14978--H.R. 15781, October 3, 4, and 9, 1974 |
| 出版 | U.S. Government Printing Office, 1974 |
| URL | http://books.google.com.hk/books?id=tBM-WPDK9CwC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |