An edition of Secret and urgent: the story of codes and ciphers
(1939)
Secret & Urgent
The Story of Codes & Ciphers (Cryptographic Series)
by Fletcher Pratt
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April 28, 2010 | History
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Cryptography, Ciphers, Cyphers| Edition | Availability |
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1
Secret & Urgent: The Story of Codes & Ciphers (Cryptographic Series)
April 1996, Aegean Park Press
Paperback
in English
0894122614 9780894122613
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3
Secret and Urgent: The Story of Codes and Ciphers
June 1942, Telegraph Books
Textbook Binding
089760721X 9780897607216
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4
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5
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| April 28, 2010 | Edited by Open Library Bot | Linked existing covers to the work. |
| March 17, 2010 | Edited by WorkBot | update details |
| December 10, 2009 | Created by WorkBot | add works page |