Sedgwick, Adam (1845), Geological Map of North Wales to accompany ‘On the Older Palaeozoic (Protozoic) Rocks of North Wales’, extract from QJGS
Sedgwick, Adam (1845), Geological Map of North Wales to accompany ‘On the Older Palaeozoic (Protozoic) Rocks of North Wales’, extract from Quarterly Journal of the Geological Society, v.1, n.1, pp.5-22. Hand coloured fold out map, 1:550,000 approx. 22.5 x 29cm. in very good condition. Some pages of text are uncut. In very good condition.