Subject ASC00014sg
The Quarterly journal of the Geological Society of London.
v.26 (1870), Page 101 (1870)
Smithsonian Libraries
BHL Page 39017636
Keywords
dividing ridge of the north of england england' leicester huddersfield whitby map dividing ridge of north england clay deposit ice England chalky clays ice age Outline Map of Dividing Ridge of North England sea clay