Citations
Very clean looking chalk from the deepest part of chalk pit between Holwood & Leve's Green 20 or 30 feet below surface [percentage of other matter in various samples], 1848-01-01 - 1882-04-30, GBR/0012/MS DAR 65: 42. Cambridge University Library. |
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Very clean looking chalk from the deepest part of chalk pit between Holwood & Leve's Green 20 or 30 feet below surface [percentage of other matter in various samples], 1848-01-01 - 1882-04-30, GBR/0012/MS DAR 65: 42. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/734910 Accessed November 25, 2024. |