Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Playfair, Lyon Playfair, Baron, 1818-1898, 2 canlyniadau
- Ramsay, Elizabeth, 2 canlyniadau
- Sharpe, James, Glasgow, 2 canlyniadau
- Williams, W. R. Stuart, 2 canlyniadau
- Ramsay, John C., 2 canlyniadau
- Margam Estate (Wales), 1 canlyniadau
- Peel, Robert, 1788-1850, 1 canlyniadau
- Latham, R. G. (Robert Gordon), 1812-1888., 1 canlyniadau
- Hills-Johnes, Elizabeth, 1834-1927, 1 canlyniadau
- Davys family, of Neuadd-fawr, 1 canlyniadau
- Pob un
- Public health -- Scotland -- Glasgow., 2 canlyniadau
- Lead mines and mining -- Wales -- Ceredigion, 1 canlyniadau
- Scotland -- Description and travel, 1 canlyniadau
- Astronomy, 1 canlyniadau
- France -- Description and travel, 1 canlyniadau
- Allt Ogofau (Cynwyl Gaeo, Wales), 1 canlyniadau
- Dolaucothi Estate (Wales), 1 canlyniadau
- Gold mines and mining -- Wales -- Carmarthenshire, 1 canlyniadau
- Volcanoes., 1 canlyniadau
- Earthquakes., 1 canlyniadau
