Needles and haystacks: the search for Ultra in the 1930's
Approved for public release; distribution is unlimited. === This thesis traces the efforts in the 1930's of the Polish, French, and British Intelligence Services to break the German Enigma ciphering machine, efforts which led to the Bletchley Park Ultra operations of World War II. The coope...
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| Language: | en_US |
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Monterey, California. Naval Postgraduate School
2012
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| Online Access: | http://hdl.handle.net/10945/19918 |