The Silurian System: Founded On Geological Researches in the Counties of Salop, Hereford, Radnor, Montgomery, Caermarthen, Brecon, Pembroke, Monmouth, Gloucester, Worcester, and Stafford; With Descriptions of the Coal-Fields and Overlying Formations, Volu by Roderick Impey Murchison
Unfortunately we do not have a summary for this item at the moment