Subject ASC00011v5
The Quarterly journal of the Geological Society of London.
v.67 (1911), (1845)
Smithsonian Libraries
BHL Page 39748924
Keywords
geologic map Northeast England Stratigraphy Permian Triassic trias England permian map geology england north sea nottingham tuxford thorne harrogate sunderland middlesbrough sandstone limestonel alluvium