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Catalogue reference: OS 51/25
This record is about the Primary Triangulation French connection 1951: triangulation diagram from the Primary... dating from 1950 Jan 01-1968 Dec 31 in the series Ordnance Survey: Photographs and Pictorial Images. It is held at The National Archives, Kew.
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Primary Triangulation French connection 1951: triangulation diagram from the Primary Triangulation of Great Britain observed 1951. Showing the connection of the South East coast of England and France described in Appendix 10 of 'History of the Retriangulation of Great Britain 1935-1962'
OS 51
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Primary Triangulation French connection 1951: triangulation diagram from the Primary...
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