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1
by Benson, Robert Louis
Published 1997
Center for Cryptologic History, National Security Agency
Subjects: “...Great Britain / Armed Forces / History / 20th century / blmlsh...”
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2
by Hargreaves, E. L.
Published 2013
Routledge
Subjects: “...HISTORY / Europe / Western / bisacsh...”
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3
by Parker, Frederick D.
Published 1993
National Security Agency, Center for Cryptologic History
“...United States cryptologic history series. IV, World War II...”
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4
by Kahn, David
Published 2014
CRC Press, Taylor & Francis Group
Table of Contents: “...: How Garbles Tickled History; Chapter 22: The Cryptologic Origin of Braille...”
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6
Published 2014
Center for Cryptologic History