| Author | Gordon R. Dickson |
| Editor | Gordon R. Dickson |
| Imprint | Ace Science Fiction |
| Publisher | ACE |
| Contributing Writer | Arthur C. Clarke, Keith Laumer, Ben Bova, Myron R. Lewis, Joe Henley, Frank M. Robinson, David Drake, Poul Anderson, Fred Saberhagen, Joe Haldeman, Gordon R. Dickson, James White, Harry Harrison, Gene Wolfe, Hal Clement |
| Publisher Series | Ace Science Fiction |
| Format | Mass-Market Paperback |
| Language | English |
| Location | Kirkwood, NY, USA |
| Copyright | 1975 |
| First Paperback Printing | 1981-06 |
| Pages / Font | 266 pages |
| Catalog Number | 11531-4 |
| Price | $2.50 (US) |
| ISBN | 0-441-11531-4 |
| Barcode | 0 72742 00250 |
| EAN 5 | 11531 |
| Printer's Key | 2 4 6 8 0 9 7 5 3 |
