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Over 50 Secret Codes
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Over 50 Secret Codes

pocket, 2015
Engelsk
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
Engelsk
Vekt
188 gram
Utgivelsesdato
1.3.2015
Antall sider
112