Hidden Codes & Grand Designs: Secret Languages From Ancient Times To Modern DayOne of France's leading puzzle book authors takes readers on a tour of the methods for encoding secrets that have taken many amazing turns through the ages, in an illustrated work that includes more than 150 brain teasing problems., ISBN13: 9781402728334 ISBN10: 1402728336 Material Type: hardcover
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Hidden Codes & Grand Designs: Secret Languages From Ancient Times To Modern Day