Citations
Instructions and correspondence file. Specification half inch G.B. Second Series appendix 'A' : table of conventional signs, 1957, GBR/3296/Maps/CCSA.OS_122_5, OS_122_5. Cambridge University Library. |
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Instructions and correspondence file. Specification half inch G.B. Second Series appendix 'A' : table of conventional signs, 1957, GBR/3296/Maps/CCSA.OS_122_5, OS_122_5. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/242654 Accessed April 30, 2025. |