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Title:
Destroy after reading : the world of secret codes / Mary Colson.
Author:
Call Number:
j652.8 COL
Publication Date:
c2011.
Publisher:
Chicago, Ill. : Raintree, c2011.
Physical Description:
32 p. : col. ill. ; 25 cm.
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.
Bibliography Note:
Includes bibliographical references (p. 31) and index.
Horizon Bib Number:
1283466
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