Paperback (04 Jul 2001)
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The author covers the story from the early code-breaking efforts through the structure of the pre-war Government code and Cypher school to Bletchley Park where a powerful organisation arose, unscrambling secret enemy messages everyday.
| ISBN: | 9780850528107 |
| Publisher: | Leo Cooper |
| Imprint: | Leo Cooper |
| Pub date: | 04 Jul 2001 |
| DEWEY: | 940.548641 |
| DEWEY edition: | 21 |
| Number of pages: | 190 |
| Weight: | 320g |
| Height: | 234mm |
| Width: | 154mm |
| Spine width: | 19mm |
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