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Aprašymas

• New B-format paperback edition.
• Ronald Koorm has given talks and lectures on the codebreaking outstations for several years - this is the last piece of the amazing Bletchley jigsaw.
• Full of new stories: who built the first electronic digital computer? Tommy Flowers - but not at Bletchley - at Dollis Hill, for the Post Office!
• The first detailed study of the Bombe registers at the National archives, which brings a new understanding of the perennially fascinating Bletchley story.