Codes and Ciphers Secret Writing Through the Ages

By John Laffin

Book Overview

"In this simple and comprehensive history of secret writing, John Laffin tells fascinating stories about the use of codes and ciphers from ancient to modern times." This description may be from another edition of this product.

• Format: Hardcover
• Language: English
• ISBN: 0200711180
• ISBN13: 9780200711180
• Release Date: January 1964
• Publisher: Abelard-Schuman Ltd
• Weight: 0.95 lbs.
• Age Range: 12 years and up
• Grade Range: Grade 7 and higher