The economic and technological development of the slate quarrying industry in the Nantlle Valley, Gwynedd
Electronic versions
Dogfennau
22.8 MB, dogfen-PDF
Details
| Iaith wreiddiol | Saesneg |
|---|---|
| Sefydliad dyfarnu | |
| Goruchwylydd / Goruchwylwyr / Cynghorydd | |
| Dyddiad dyfarnu | 1996 |