Subject ASC0001yzq
The Quarterly journal of the Geological Society of London.
v.46 (1890), Page 336 (1890)
Smithsonian Libraries
BHL Page 36502299
Keywords
section littlebury mile 880 feet well village boring bore marsh alluvium river gravel glacial drift chalk ordnance datum valley ground levels river gravel London. Landscape gravel glacial drift deep bore