Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Ramsay, Elizabeth, 3 canlyniadau
- Sharpe, James, Glasgow, 3 canlyniadau
- Williams, W. R. Stuart, 3 canlyniadau
- Ramsay, John C., 3 canlyniadau
- Hills-Johnes, Elizabeth, 1834-1927, 2 canlyniadau
- Johnes, Charlotte Anna Maria, 1825-1911, 2 canlyniadau
- Playfair, Lyon Playfair, Baron, 1818-1898, 2 canlyniadau
- Museum of Economic Geology, 2 canlyniadau
- Ramsay, Eliza, 2 canlyniadau
- Playfair, M. E., 2 canlyniadau
- Pob un
- Schools -- Wales -- Llandovery., 3 canlyniadau
- Lead mines and mining -- Wales -- Ceredigion, 1 canlyniadau
- Merioneth (Wales), 1 canlyniadau
- Europe -- Description and travel., 1 canlyniadau
- Scotland -- Description and travel, 1 canlyniadau
- Astronomy, 1 canlyniadau
- France -- Description and travel, 1 canlyniadau
- Fossils., 1 canlyniadau
- Ireland -- Description and travel, 1 canlyniadau
- Botany -- Wales -- Snowdonia., 1 canlyniadau
