Shand, P, Abesser, C, Farr, G, Wilton, N, Lapworth, D J, Gooddy, D C, Haria, A, and Hargreaves, R L. Baseline report series:17. The Ordovician and Silurian meta-sedimentary aquifers of central and south-west Wales. British Geological Survey Commissioned Report CR/05/034N. Environment Agency National Groundwater & Contaminated Land Centre. Technical Report NC/99/74/17 & Product code: SCHO0207BLYO-E-P, ISBN: 978 1 84432 642 6 (Adobe Acrobat PDF 7.53 MB)
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