Citations
Cartographic instruction no D.56. Use of cliff and steep slope symbols on contoured sheets, 1945 - 1969, GBR/3296/Maps/CCSA.OS_129_5, OS_129_5. Cambridge University Library. |
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Cartographic instruction no D.56. Use of cliff and steep slope symbols on contoured sheets, 1945 - 1969, GBR/3296/Maps/CCSA.OS_129_5, OS_129_5. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/242727 Accessed April 30, 2025. |