Citations
1:50,000 - Experiment no. 174/2 - line, gauge and colour - proof. London SW. sheet 170 - proof 29.6.70., 1970, GBR/3296/Maps/CCSA.MOD_L155_31, MOD_L155_31. Cambridge University Library. |
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1:50,000 - Experiment no. 174/2 - line, gauge and colour - proof. London SW. sheet 170 - proof 29.6.70., 1970, GBR/3296/Maps/CCSA.MOD_L155_31, MOD_L155_31. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/246428 Accessed May 01, 2025. |