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Reviews (2)
18 Jun, 2025
A primary historical source
A truly compelling read. This book is an important primary source for anyone interested in the history of WW2. It gives important context to British military and scientific developments of the time.
18 Jun, 2025
An important historic primary source
A great read, not only because the content is exciting but the intrigue generated by the initial efforts to keep it out of print.
Sometimes I had to reread paragraphs to understand the cryptanalysis techniques but that should be expected.
This book kept me engaged from beginning to end.