- PN2/3
- Ffeil
- 1978-1996
Rhan oWilliam 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'.
1 canlyniad yn uniongyrchol gysylltiedig Eithrio termau culach
Rhan oWilliam 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'.