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by David R. PalmerSpectra · 1985 Mass Market Paperback ISBN: 978-0-553-24878-4 ISBN-10: 0-553-24878-2 |
| See also (possibly by other authors): | ||
| 2008 | Library Binding | Threshold |
| 2007 | Paperback | Threshold |
| 2004 | Mass Market Paperback | Threshold |
| 2003 | Hardcover | Threshold |
| 2001 | Paperback | Threshold |
| 1997 | Paperback | Threshold |
| 1996 | Hardcover | Threshold |
| 1975 | Unknown Binding | Threshold |