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Olga Gray and the Woolwich Arsenal Spy Ring
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Catalogue reference: HW 67/8
This record is about the Japanese communications: messages and reports concerned with intercept, analysis... dating from 1944 Apr 01 - 1944 Jun 30 in the series Government Code and Cypher School: Signals Intelligence on Japanese Communications. It is held at The National Archives, Kew.
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Japanese communications: messages and reports concerned with intercept, analysis and code breaking
HW 67
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Japanese communications: messages and reports concerned with intercept, analysis...
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