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Over 50 Secret Codes

Författare:
pocket, 2015
Engelska
10,80 €
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.
ISBN
9781409584612
Språk
Engelska
Vikt
188 gram
Utgivningsdatum
2015-03-01
Sidor
112