B0471/18no5. British Geological Survey report vol. 18 no.5: The geology of the late Ordovician and Silurian rocks (Windermere Group) in the area around Kentmere and Crook
B0471/18no5. British Geological Survey report vol. 18 no.5: The geology of the late Ordovician and Silurian rocks (Windermere Group) in the area around Kentmere and Crook