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The codebreakers ; the story of secret writing.

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Bibliographic Details
Main Author: Kahn, David, 1930-
Format: Book
Language:English
Published: London : Weidenfeld and Nicolson, [1967]
Subjects:
Cryptography > History.
Description
Physical Description:xvi, 1164 pages : illustrations, facsimiles, portraits ; 24 cm.
Bibliography:Includes bibliographical references.