Citations
1:20,000 Trench map sheet 28NW, edition 6, GBR/3296/Maps/CCSA.IM_L136_3, IM_L136_3. Cambridge University Library. |
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1:20,000 Trench map sheet 28NW, edition 6, GBR/3296/Maps/CCSA.IM_L136_3, IM_L136_3. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/240793 Accessed November 16, 2024. |