Special Reports on the Mineral Resources of Great Britain. Memoirs of the Geological Survey. - Vol. XXV.—Lead and Zinc Ores of Northumberland and Alston Moor. By Stanley Smith, with contributions by R. G. Carruthers. pp. iv + 107, with 15 figures, 1923, price 3s. 6d. net. - Vol. XXVI.—Lead and Zinc Ores of Durham, Yorkshire and Derbyshire, with Notes on the Isle of Man. By R. G. Carruthers and SirA. Strahan. pp. iv + iii, with 2 plates and 6 figures, 1923, price 3s. net.
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Memoirs of the Geological Survey. Special Reports on the Mineral Resources of Great Britain. Vol. 30: Copper Ores of the Midlands, Wales, the Lake District and the Isle of Man
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