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Geological map, colour printed, Northumberland, scale
about 8 miles to 1 inch, in Stanford's Geological Atlas of
Great Britain and Ireland, by Horace B Woodward, published
by Edward Stanford, 12-14 Long Acre, London, 3rd edn 1914.
The areas of solid geology are coloured and labelled with a
number that refers to a table of strata near the front of
the atlas.
An index map indicates which New Series 1 inch OS geological
maps are relevant to the county.
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