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: Ci109

: Geological Maps & Plans

: Map

: Geological survey of England and Wales No.35

: A geological map of the area around the Severn Estuary. Including Bristol, Thornbury, Wotton Underedge, Chepstow.

: Geological Survey

: 1866

: Williams, J. D ; Phillips

: area around the Severn Estuary. Including Bristol, Thornbury, Wotton Underedge, Chepstow.

: 1845

: 1872

: 1866