Loading... Please Wait

50 Secret Codes

Author: Bone, Emily

Description: Children love to learn secret codes and write encrypted messages and this book will teach them everything they need to know, including Semaphore and Morse code, "Grid code" used in the American Civil War, Egyptian hieroglyphics and traditional number replacement and alphabet switching codes.

Publisher: HARPER COLLINS

Paperback
ISBN: 9781409584612

Dimensions: 19.8 and 13 cm

Publish Date: 1/05/2015

Page Count: 112