The Alan Turing Cryptic Codebreaking Puzzle Book - Paperback - VERY GOOD

The Alan Turing Cryptic Codebreaking Puzzle Book - Paperback - GOOD

The Alan Turing Cryptic Codebreaking - Paperback, by Moore Dr Gareth - Very Good

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Alan Turing: Remarkable Lives by Dermot Turing Paperback Book

The Turing Tests: Expert Logic Puzzles: Foreword by Sir Dermot Turing by Saunde

The Turing Tests: Expert Brain Training Puzzles: Foreword by Sir Dermot Turi...