Iaith wreiddiol | Saesneg |
---|---|
Cyhoeddwr | The Stationery Office |
Nifer y tudalennau | 267 |
ISBN (Argraffiad) | 978-0118845106, 0118845101 |
Statws | Cyhoeddwyd - 1997 |
Geology of the country around Llanilar and Rhayader. Memoir of the British Geological Survey, Sheets 178 and 179 (England and Wales)
Jeremy Davies, Christopher Fletcher, Richard Waters, David Wilson, Derik Woodhall, Jan Zalasiewicz
Allbwn ymchwil: Llyfr/Adroddiad › Llyfr