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: Ci91
: Geological Maps & Plans
: Map
: Geological Survey of Great Britain No. 78/Bangor
: A geological map of the area in N.W. Wales around Carnarvon. Including Llanddwyn Island, Cymeran Bay, Llangefri.
: Winwood
: Geological Survey
: Apr 1852
: Ramsey, Mr A C: De la Beche, Mr: Area of North West Wales around Carnarvon, including Llanddwyn Island, Cymeran Bay, Llangefri
: 04/1852
: 1841.