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: Ci16
: Geological Maps & Plans
: Map
: Geological Map of Durham and part of Northumberland, with Longitudinal Section across the Coalfield
: Map showing the geology of the area around Durham. Covering Penrith to Harlepool, Sunderland, Newcastle, to Alnmouth Bay. Longitudinal section across the coalfields.
: The London Geographical Institute
: 1913
: Wedd, C B.: the area around Durham, covering Penrith to Harlepool, Sunderland, Newcastle to Alnmouth Bay.
: 1913