Citations
NIGERIA 1:50,000 CHAD (D.O.S. 430) : authority for mapping, area of mapping, general material, diagrams, map material, reports, sheet names, administrative breakdown, instructions, gaps in air photo cover., 1959-01-01 - 1964-12-31, GBR/3296/Maps/CCSA.DOS_297_3, DOS_297_3. Cambridge University Library. |
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NIGERIA 1:50,000 CHAD (D.O.S. 430) : authority for mapping, area of mapping, general material, diagrams, map material, reports, sheet names, administrative breakdown, instructions, gaps in air photo cover., 1959-01-01 - 1964-12-31, GBR/3296/Maps/CCSA.DOS_297_3, DOS_297_3. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/238356 Accessed November 11, 2024. |