| 其他書名 | A Precursor to the Space Shuttle |
| 出版 | National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1994 |
| URL | http://books.google.com.hk/books?id=H4s6AQAAIAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |