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Author Colson, Mary.

Title Destroy after reading : the world of secret codes / Mary Colson.

Publication Info. Chicago, Ill. : Raintree, [2011]
©2011

Copies

Location Call No. Status
 Manchester, Main Library - Children's Department  J 652.8 COLSON    Check Shelf
Description 32 pages : color illustrations ; 25 cm.
Series Culture in action.
Culture in action.
Bibliography Includes bibliographical references (page 31) and index.
Contents What's so special about secret codes? -- Early codes -- Code symbols and cracking codes -- Code school and the enigma machine -- Coding languages -- Codes of today and tomorrow -- Glossary -- Find out more -- Index.
Study Program Accelerated Reader AR MG 6.5 1.0 137876.
Subject Cryptography -- Juvenile literature.
Ciphers -- Juvenile literature.
Cryptography -- History -- Juvenile literature.
Ciphers -- History -- Juvenile literature.
ISBN 9781410939272
1410939278
9781406217209 hardback
1406217204 hardback
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