Blackwood Gary:
Mysterious Messages
A History Of Codes And Ciphers
Penguin Putnam Inc (United States), 2009
Hardback, 176 pages
Size: 197x159 mm
ISBN: 9780525479604
ISBN-10: 0525479600
List price: £11.99
You save: 30%
Mysterious Messages
A History of Codes and Ciphers. A fascinating look at history's most mysterious messages packed with puzzles to decode and ciphers that children can use themselves.

