Citations
GSGS (Air) 111b International Aeronautical Maps of the World : Conventional Signs for aerial information (black) plates, Plate II, 1920-09, GBR/3296/Maps/CCSA.IM_L24_59, IM_L24_59. Cambridge University Library. |
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GSGS (Air) 111b International Aeronautical Maps of the World : Conventional Signs for aerial information (black) plates, Plate II, 1920-09, GBR/3296/Maps/CCSA.IM_L24_59, IM_L24_59. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/240785 Accessed November 16, 2024. |