Secret codes
By: edited by Lisa Miles ; designed by Nigel Reece ; illustrated by Colin King ; ... additional illustrations by Guy Smith and Radhi Parekh based on material by Falcon Travis and Judy Hindley
Series: Usborne hotshots -- 42
Publisher: Scholastic
Published: 1997
Place of publication: New York
Language: eng
Number of pages: 31
ISBN-13: 9780590115186
Subjects: Ciphers; Juvenile literature; Cryptography
Notes: Reprint. Originally published: London : Usborne Pub., 1996.

"Signs and signals ... scrambling ... codebreaking ..."--Cover.

"This Scholastic edition is only available for distribution through the school market."--Page 4 of cover.

Includes index.

5.

008-012.