Citations
Retriangulation of Great Britain: primary observations: 1936-1957; sheet 1, 1957, GBR/3296/Maps/CCSA.OS_L65_1, OS_L65_1. Cambridge University Library. |
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Retriangulation of Great Britain: primary observations: 1936-1957; sheet 1, 1957, GBR/3296/Maps/CCSA.OS_L65_1, OS_L65_1. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/245153 Accessed November 20, 2024. |