Citations
One inch 7th series drawing instructions, 1948 - 1955, GBR/3296/Maps/CCSA.OS_152_14, OS_152_14. Cambridge University Library. |
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One inch 7th series drawing instructions, 1948 - 1955, GBR/3296/Maps/CCSA.OS_152_14, OS_152_14. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/243303 Accessed April 29, 2025. |