| Author | John Wyndham |
| Cover/Jacket Design by | Harry Willock |
| First Published by | Michael Joseph Ltd |
| Publisher | Penguin Books |
| Printed and Bound by | Hunt Barnard Printing Ltd |
| Format | Paperback |
| Language | English |
| Location | England |
| Copyright | 1953 |
| This Edition Published | 1973 |
| Pages / Font | 239 pages |
| ISBN 10 | 0140010750 |
| Chapters | Rationale
Phase One
Phase Two
Phase Three Rationale
Phase One
Phase Two
Phase Three Show all ▾ |
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