Over 50 Secret Codes
SKU:
9780794539672
$5.99
$5.99
per item
2 available
Description
Paperback edition of a successful card pack format, that will unleash the inner code-breaker in all of us! Contains a combination of codes such as Semaphore and Morse code, as well as historical codes including the "Grid code" used in the American Civil War and Ancient Egyptian hieroglyphics and traditional codes such as number replacement and alphabet switching codes.