Grade
4-6
Janeczko
Loads of Codes and Secret Ciphers
Hardcover
(Simon & Schuster Children's Publishing Oct. 1, 1984)
, 1st edition
Discusses and provides practice in making and breaking codes and ciphers, as well as in building simple coding devices to transmit secret messages.
- ISBN
- 0027478106 / 9780027478105
- Pages
- 108
- Weight
- 13.6 oz.
- Dimensions
- 6.5 x 0.8 in.