| 其他書名 | Proceedings of a Workshop Held at NASA Goddard Space Flight Center, Greenbelt, Maryland, May 13-15, 1991 |
| 出版 | National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Divison, 1991 |
| URL | http://books.google.com.hk/books?id=26UfAQAAIAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |