item:- JandMN : 173.2
image:- © see bottom of page
MA12M2.jpg
Geological map, uncoloured lithograph, Provisional Map of the
Volcanic Rocks of the Lake District, scale about 4 miles to 1
inch, by J E Marr and Alfred Harker, published by Cambridge
University Press, Cambridge, Cambridgeshire, 1916.
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