| Author | Fritz Leiber |
| Publisher | Penguin Books |
| Publisher Series | Penguin Science Fiction |
| Cover Artist | Philip Castle |
| Printed by | Richard Clay (The Chaucer Press) Ltd |
| Format | Paperback |
| Language | English |
| Location | England |
| This Edition Published | 1969 |
| Reprinted | 1976 |
| Pages / Font | 346 pages / Linotype Plantin |
| ISBN | 0140025944 |
| Price | United Kingdom 75p |
| Price | Canada $1.95 |
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