Breaking secret codes
By: by Jillian Gregory.
Publisher: Edge Books
Published: 2011
Place of publication: Mankato, Minn
Language: eng
ISBN-13: 9781429645683
Subjects: Cryptography -- Juvenile literature; Ciphers -- Juvenile literature
Genres: Juvenile literature
Description: "Discusses different methods for breaking secret codes"--Provided by publisher.
Notes: Includes bibliographical references and index.