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Forgotten front: Britain, Bolshevism, and Chinese auxiliaries in northern Russia
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Catalogue reference: WO 181/16
This record is about the Aerial survey cameras: proposed correction for aircraft speed by optical device dating from 1936-1937 in the series War Office: Directorate of Military Survey and predecessors: Papers. It is held at The National Archives, Kew.
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Aerial survey cameras: proposed correction for aircraft speed by optical device
WO 181
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Aerial survey cameras: proposed correction for aircraft speed by optical device
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