Citations
'List of trigonometrical points in part of N.E. France and Belgium', 1917, GBR/3296/Maps/CCSA.IM_467_2, IM_467_2. Cambridge University Library. |
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'List of trigonometrical points in part of N.E. France and Belgium', 1917, GBR/3296/Maps/CCSA.IM_467_2, IM_467_2. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/239714 Accessed November 14, 2024. |