Cover Image

Codes and ciphers /

Discusses writing and deciphering codes and ciphers. Includes chapters on secret languages and cipher devices.

Bibliographic Details
Main Author: Pennycook, Andrew
Format: Book
Language:English
Published: New York : McKay, [1980]
Subjects:
Ciphers > Juvenile literature.
Ciphers.
Description
Summary:Discusses writing and deciphering codes and ciphers. Includes chapters on secret languages and cipher devices.
Item Description:Includes index.
Physical Description:152 pages : illustrations ; 22 cm.
ISBN:0679508562 :