Alan Turing's Cryptic Codebreaker's Puzzle Book (Arcturus Classic Puzzles)

Alan Turing's Cryptic Codebreaker's ... by Moore, Dr Gareth Paperback / softback

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Alan Turing's Cryptic Codebreaker's Puzzle Book (Sirius Classic Puzzles)

Alan Turing's Cryptic Codebreaker's Puzzle Book by Dr Gareth Moore Paperback Boo

Gareth Moore Alan Turing's Cryptic Codebreaker's Puzzle (Paperback) (UK IMPORT)

Alan Turing's Cryptic Codebreaker's Puzzle Book - 9781398825437