Totally cracking codes
Kimpton, Diana2010
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First the ancient Greeks hid messages under their hair. Then Mary Queen of Scots completely lost her head because of a cracked code. Now computers create codes no human can crack. This is the ultimate guide to unlocking the secret language of spies.
Main title:
Totally cracking codes / Diana Kimpton ; illustrated by Mike Phillips.
Imprint:
London : Scholastic, 2010.
Collation:
158 p. : ill. ; 20 cm.
Notes:
Originally published: as Cracking codes. 2003.
Audience:
Juvenile.
ISBN:
9781407114569 (pbk)1407114565 (pbk)
Dewey class:
652.8
Local class:
J652.8652.8
Language:
English
Added title:
Subject:
BRN:
610178