The Alan Turing Cryptic Codebreaking Puzzle Book - Paperback - GOOD

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

The Alan Turing Codebreakers Puzzle Book - Paperback - GOOD

Alan Turing: The Enigma - Paperback By Hodges, Andrew - VERY GOOD

The Alan Turing Cryptic Codebreakin..., Moore, Dr Garet

Alan Turing: The Enigma, Andrew Hodges, Used; Very Good Book

Alan Turing Codebreaker's Puzzle Book - Paperback By Gareth Moore - GOOD