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Good reprint of a classic, but not updated to 1990s
on 30 April 1997
The 1967 edition of this book is and always will be a classic. What a disappointment to find that this new edition offers such a poor updating of new information which has come to light over the last the 30 years. If the revelations of the 1970s about the Enigma decrypts and the Bletchley Colossus machines did not warrant at least a major chapter, what does? (They get only brief treatment in the new 15 page addendum.) Numerous other omissions come to mind. This book deserved better for its new edition.