Codes, Ciphers and Secret Writing View on Open Library

Codes, Ciphers and Secret Writing

by Martin Gardner

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First published: 1972 2 languages ISBN: 9788488155009
Description
Explains in simple terms how to encode and decode messages in various ciphers, describes coding machines, and gives formulas for invisible ink.
Subjects
Ciphers Juvenile literature Cryptography Cryptography. Ciphers. Signs and symbols Writing

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