Citations
1/1M Physical (magnetic), 1941 - 1954, GBR/3296/Maps/CCSA.OS_113_4, OS_113_4. Cambridge University Library. |
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1/1M Physical (magnetic), 1941 - 1954, GBR/3296/Maps/CCSA.OS_113_4, OS_113_4. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/242581 Accessed April 30, 2025. |