Subject ASC00011pi
The Quarterly journal of the Geological Society of London.
v.56 (1900), Page 115 (1900)
Smithsonian Libraries
BHL Page 41487405
Keywords
geology section cross-section Cwm Barn CornGafallt shales grits conglomerate mudstone geological strata Cwn Barn to Caban Coch Gyrn Hill to Allt Coch geological section