Citations
'Royal Engineers Survey Service - Staff Manual', 1969, GBR/3296/Maps/CCSA.IM_565_18, IM_565_18. Cambridge University Library. |
|
'Royal Engineers Survey Service - Staff Manual', 1969, GBR/3296/Maps/CCSA.IM_565_18, IM_565_18. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/240605 Accessed November 15, 2024. |