- PN2/3
- File
- 1978-1996
Part of William Condry Papers,
The file comprises printed articles on the formation and characteristics of sedimentary mudstone, Ordovician rocks, mainly in mid and north Wales, including `Nod Glas'.
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Part of William Condry Papers,
The file comprises printed articles on the formation and characteristics of sedimentary mudstone, Ordovician rocks, mainly in mid and north Wales, including `Nod Glas'.