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Olga Gray and the Woolwich Arsenal Spy Ring
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Catalogue reference: HW 18/6
This record is about the U-Boat methods of combined attack on convoys (ZIP/ZG/116) dating from 1941 Feb 01-1941 Oct 31 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 18/6
1941 Feb 01-1941 Oct 31
U-Boat methods of combined attack on convoys (ZIP/ZG/116)
ZIP/ZG/116
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Open Document, Open Description
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,...
U-Boat methods of combined attack on convoys (ZIP/ZG/116)
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