Citations
GSGS misc. 1702 conventional signs for field sketching, 1970, GBR/3296/Maps/CCSA.MOD_150_49, MOD_150_49. Cambridge University Library. |
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GSGS misc. 1702 conventional signs for field sketching, 1970, GBR/3296/Maps/CCSA.MOD_150_49, MOD_150_49. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/241057 Accessed November 16, 2024. |