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Codes, ciphers, and secret writing /

Explains in simple terms how to encode and decode messages in various ciphers, describes coding machines, and gives formulas for invisible ink.

Main Author: Gardner, Martin, 1914-
Format: Book
Language: English
Published: New York : Simon and Schuster, [1972]
Check holdings at Paniza Library, AUBG Call Number: Z103.3.G37 1972