A fun and informative guide to making and breaking secret codes. Starting with a mysterious letter to the reader written in a secret language, the book goes on to cover codes such as Egyptian hieroglyphics, smoke signals and code languages, and on to modern day computer and bar codes.
Sprache
Verlagsort
Verlagsgruppe
Hachette Children's Group
Zielgruppe
Produkt-Hinweis
Illustrationen
Maße
Höhe: 128 mm
Breite: 198 mm
Gewicht
ISBN-13
978-0-340-69347-6 (9780340693476)
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Schweitzer Klassifikation
