Citations
NIGERIA 1:250,000 BORNU PROVINCE Geophysical Map (D.O.S. (GEOL) 1110) ; progress folder : authority for mapping, sheet index, geographical values and rectangular co-ordinates., 1959-01-01 - 1960-12-31, GBR/3296/Maps/CCSA.DOS_296_19, DOS_296_19. Cambridge University Library. |
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NIGERIA 1:250,000 BORNU PROVINCE Geophysical Map (D.O.S. (GEOL) 1110) ; progress folder : authority for mapping, sheet index, geographical values and rectangular co-ordinates., 1959-01-01 - 1960-12-31, GBR/3296/Maps/CCSA.DOS_296_19, DOS_296_19. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/238350 Accessed May 16, 2025. |