Citations
Instructions and correspondence file. Half inch drawing instructions, 1957, GBR/3296/Maps/CCSA.OS_122_4, OS_122_4. Cambridge University Library. |
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Instructions and correspondence file. Half inch drawing instructions, 1957, GBR/3296/Maps/CCSA.OS_122_4, OS_122_4. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/242653 Accessed November 17, 2024. |