Subject ASC0001dsf
The Quarterly journal of the Geological Society of London.
v.49 (1893), Page 432 (1893)
Natural History Museum Library, London
BHL Page 45959072
Keywords
NAnt Cawrddu Fault Section immediately west of the Nant Cawrddu Fault Nant Cawrddu Geology Corwen llandovery Wales Rock Bala Grit Slate shale Graptolite fault