Citations
BRITISH GUIANA + N.W. BLOCK 1:50,000 Revision (D.O.S. 40) Part 1 ; progress folder : authority for mapping, estimates, magnetic variation & annual change, lists, letters, general material., 1958-01-01 - 1974-12-31, GBR/3296/Maps/CCSA.DOS_266_9, DOS_266_9. Cambridge University Library. |
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BRITISH GUIANA + N.W. BLOCK 1:50,000 Revision (D.O.S. 40) Part 1 ; progress folder : authority for mapping, estimates, magnetic variation & annual change, lists, letters, general material., 1958-01-01 - 1974-12-31, GBR/3296/Maps/CCSA.DOS_266_9, DOS_266_9. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/237866 Accessed November 14, 2024. |