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Catalogue reference: HW 18/181
This record is about the W/Tactivity charts Series of charts which accompanied the naval traffic analysis... dating from 1940 May 28-1940 Nov 30 in the series Government Code and Cypher School: Naval Section: Reports of German, Italian, French,.... It is held at The National Archives, Kew.
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HW 18/181
1940 May 28-1940 Nov 30
W/Tactivity charts Series of charts which accompanied the naval traffic analysis reports in the X series
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HW 18
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Records created or inherited by Government Communications Headquarters (GCHQ)
Government Code and Cypher School: Naval Section: Reports of German, Italian, French,...
W/Tactivity charts Series of charts which accompanied the naval traffic analysis...
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