Secret Languages: Communicating in Codes and Ciphers

By Julian A. Bielewicz

Describes the history, methods, and types of codes, ciphers, and other ways of communicating privately. This description may be from another edition of this product.

• Format: Hardcover
• Language: English
• ISBN: 0525666516
• ISBN13: 9780525666516
• Release Date: July 1980
• Publisher: Dutton Juvenile
• Length: 128 Pages
• Weight: 0.86 lbs.