The GCHQ Puzzle Book: Pit Your Wits Against the People Who Cracked Engima

By GCHQ

GCHQ is a top-secret intelligence and security agency which recruits some of the very brightest minds. Over the years, their codebreakers have helped keep England safe, from the Bletchley Park... This description may be from another edition of this product.

• Format: Paperback
• Language: English
• ISBN: 0718185544
• ISBN13: 9780718185541
• Release Date: March 2019
• Publisher: Michael Joseph
• Length: 368 Pages
• Weight: 1.29 lbs.
• Dimensions: 9.2" x 1.1" x 6.0"