Title The codebreakers; the story of secret writing.

Publication Info.

New York : Macmillan [1967]

Copies

Location	Call No.	Status
Colchester, Cragin Memorial Library - Adult Department	358.24 KAH	Billed

Description	xvi, 1164 pages : illustrations, facsimile, portraits ; 24 cm
Bibliography	Includes bibliographical references.
Subject	Cryptography -- History.
	Cryptographers.

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