The reader of gentlemen's mail [electronic resource] : Herbert O. Yardley and the birth of American codebreaking / David Kahn.
By: Kahn, David.
Contributor(s): ebrary, Inc.
Material type:![materialTypeLabel](/opac-tmpl/lib/famfamfam/BK.png)
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Includes bibliographical references (p. 291-304) and index.
Electronic reproduction. Palo Alto, Calif. : ebrary, 2009. Available via World Wide Web. Access may be limited to ebrary affiliated libraries.
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