| 其他書名 | Proceedings of American Astronautical Society (15th Annual) and Operations Research Society (35th Annual) for Sessions on Space Only, June 17-20, 1969, Denver, Colorado |
| 出版 | AAS Publications Office, 1971 |
| URL | http://books.google.com.hk/books?id=C8M8AAAAIAAJ&hl=&source=gbs_api |