Citations
Status of tertiary levelling 1 Jan 1973, 1973-01-01, GBR/3296/Maps/CCSA.MOD_189_2/2/2, MOD_189_2/2/2. Cambridge University Library. |
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Status of tertiary levelling 1 Jan 1973, 1973-01-01, GBR/3296/Maps/CCSA.MOD_189_2/2/2, MOD_189_2/2/2. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/241118 Accessed May 04, 2025. |