Wales North 1908. Geological Map of the Neighbourhood of Glyn Ceiriog, North Wales

Wales North 1908. Geological Map of the Neighbourhood of Glyn Ceiriog, North Wales, colour printed folded map at 1:21120 (3 ins =1mile) 38 x 50cm, in ‘The Bala and Llandovery Rocks of Glyn Ceiriog (North Wales).’ extract from Quarterly Journal of the Geological Society, v.64. Nov, 1908. By Theodore Groom and Philip Lake. Pp.546-595. Map and text in very good condition.