Before Bletchley Park : the codebreakers of the First World War /

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Bibliographic Details
Author / Creator:	Gannon, Paul, author.
Imprint:	Cheltenham, Gloucestershire : History Press, 2020.
Description:	1 online resource (352 pages, 8 unnumbered pages of plates) : illustrations (some color), maps.
Language:	English
Subject:	World War, 1914-1918 -- Cryptography. World War, 1914-1918 -- Secret service -- Great Britain. Cryptography. Secret service. Great Britain.
Format:	E-Resource Book
URL for this record:	http://pi.lib.uchicago.edu/1001/cat/bib/12774843

Hidden Bibliographic Details
ISBN:	9780750996341 (electronic bk.) 075099634X (electronic bk.) 0750992468 9780750992466
Notes:	Includes bibliographical references and index. Description based on print version record.
Other form:	Original 0750992468 9780750992466

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