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Olga Gray and the Woolwich Arsenal Spy Ring
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Catalogue reference: ADM 258/76
This record is about the Trials on bottom searching by underwater television camera in aid of mine classification dating from 1954 in the series Admiralty: Underwater Countermeasures and Weapons Establishment and predecessors:.... It is held at The National Archives, Kew.
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Trials on bottom searching by underwater television camera in aid of mine classification
ADM 258
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Trials on bottom searching by underwater television camera in aid of mine classification
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