Mysterious Messages: A History of Codes and Ciphers

by Gary L. Blackwood

A fascinating look at history's most mysterious messages, packed with puzzles to decode and ciphers that children can use themselves. Includes the encrypted notes of Spartan warriors, the brilliant... This description may be from another edition of this product.

• Format: Hardcover
• Language: English
• ISBN: 0525479600
• ISBN13: 9780525479604
• Release Date: October 2009
• Publisher: Dutton Children's Books
• Length: 170 Pages
• Weight: 0.90 lbs.
• Dimensions: 0.6" x 6.3" x 7.9"
• Age Range: 10 years and up
• Grade Range: Grade 5 and higher