Title rated 4.3 out of 5 stars, based on 30 ratings(30 ratings)
Book, 2000
Current format, Book, 2000, First Touchstone edition, Available now.
Book, 2000
Current format, Book, 2000, First Touchstone edition, Available now. Offered in 0 more formats
A World War II cryptographer chronicles his career in the Special Operations Executive, discussing his replacement of outmoded codes with one-time silk-printed codes.
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