Fun with Codes and Ciphers Workbook

By Norma Gleason

Fascinating, fun-filled book tells how to write and decipher coded messages. Easy-to-follow directions let even young beginners become experts in backward ciphers, false word division, null ciphers... This description may be from another edition of this product.

• Format: Paperback
• Language: English
• ISBN: 0486254054
• ISBN13: 9780486254050
• Release Date: July 1987
• Publisher: Dover Publications
• Length: 48 Pages
• Weight: 0.35 lbs.
• Dimensions: 0.2" x 8.3" x 10.8"
• Age Range: 9 to 12 years
• Grade Range: Grades 4 to 7