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SUBJECT
- Natural sciences & mathematics - Mineralogy (3)
Memoirs of the Geological Survey - Vol. 27 - Copper Ores of Cornwall and Devon.: Special report on the mineral resources of Great Britain. (1923)
Memoirs of the Geological Survey - Vol. 21 - Lead, Silver-Lead and Zinc Ores of Cornwall, Devon and Somerset.: Special report on the mineral resources of Great Britain. (1921)