| Author | A. E. van Vogt |
| Copyright Holder | A. E. van Vogt, Street And Smith Publications, Inc. |
| Publisher Series | New English Library Science Fiction |
| Publisher | New English Library, Weidenfeld & Nicolson |
| First Published by | Greenberg Publications, Inc. |
| Printed by | Hunt Barnard Printing Ltd |
| Format | Paperback |
| Language | English |
| Location | UK |
| Copyright | 1947 |
| Copyright | 1952 |
| First Printing in Country | 1954 |
| This Edition Published | 1970 |
| Reprinted | 1970 |
| Pages / Font | 141 pages |
| ISBN | 45000444 9 |
| Catalog Number | NEL 2536 |
| Price | 5/- (25p) U.K. |
| Price | 80c Australia |
| Price | 75c N.Z |
| Price | Pts 65 Spain |
