Alan Turing: the enigmaThe story of Alan Turing, World War II's secret hero, whose brilliant mathematical work resulted in the "Enigma" machine which broke the German military code and gave the Allied forces advance knowledge of German military movements 
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Very detailed and well researched biography.  Goodreads
Informative.... but so hard to read!  Goodreads
This is a very wellwritten and wellresearched.  Goodreads
Review: Alan Turing: The Enigma
User Review  Henrik  GoodreadsSuperbly written bio about one of my alltime heroes. Alan Turing broke the German Enigma code and thus instrumental in helping win the war. He also invented the modern computer and have therefore had ... Read full review
Review: Alan Turing: The Enigma
User Review  Brittany Bond  GoodreadsMore of a boyman with an abstract mind tale rather than a historical biopic (a la the likes of the main Oppenheimer or Wittgenstein) as far as biographies of scientists go. I enjoyed it but ... Read full review
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