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Over 50 Secret Codes
Tallenna

Over 50 Secret Codes

pokkari, 2015
englanti
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
Kieli
englanti
Paino
188 grammaa
Julkaisupäivä
1.3.2015
Sivumäärä
112