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Olga Gray and the Woolwich Arsenal Spy Ring
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Catalogue reference: ADM 258/91
This record is about the Specification and testing of magnetic properties for clearance diving and mine investigation... 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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Specification and testing of magnetic properties for clearance diving and mine investigation equipment
ADM 258
See the series level description for more information about this record.
Records of the Admiralty, Naval Forces, Royal Marines, Coastguard, and related bodies
Admiralty: Underwater Countermeasures and Weapons Establishment and predecessors:...
Specification and testing of magnetic properties for clearance diving and mine investigation...
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