Citations
B.A.T. GEOLOGICAL 1:500,000 Sheets 3,4 & 5 (BAS 500G) : index of proposed sheets, specifications, construction data, diagrams, letters, proof/ink specs., C2 summary of BAS neg. proof correction., 1979-01-01 - 1982-12-31, GBR/3296/Maps/CCSA.DOS_260_5, DOS_260_5. Cambridge University Library. |
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B.A.T. GEOLOGICAL 1:500,000 Sheets 3,4 & 5 (BAS 500G) : index of proposed sheets, specifications, construction data, diagrams, letters, proof/ink specs., C2 summary of BAS neg. proof correction., 1979-01-01 - 1982-12-31, GBR/3296/Maps/CCSA.DOS_260_5, DOS_260_5. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/237763 Accessed September 22, 2024. |