Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Bwlchglas Lead Mine, 2 canlyniadau
- Margam Estate (Wales), 1 canlyniadau
- Hills-Johnes, Elizabeth, 1834-1927, 1 canlyniadau
- Davys family, of Neuadd-fawr, 1 canlyniadau
- North and South Wales Bank., 1 canlyniadau
- Royal Agricultural College, 1 canlyniadau
- Palmerston, Henry John Temple, Viscount, 1784-1865, 1 canlyniadau
- Playfair, Lyon Playfair, Baron, 1818-1898, 1 canlyniadau
- Ramsay, Elizabeth, 1 canlyniadau
- Museum of Economic Geology, 1 canlyniadau
- Pob un
- Lead mines and mining -- Wales -- Ceredigion, 8 canlyniadau
- Mining corporations -- Wales -- Cardiganshire, 3 canlyniadau
- Bwlchglas Mine (Wales), 2 canlyniadau
- Scotland -- Description and travel, 1 canlyniadau
- Astronomy, 1 canlyniadau
- France -- Description and travel, 1 canlyniadau
- Cardigan (Wales), 1 canlyniadau
- Allt Ogofau (Cynwyl Gaeo, Wales), 1 canlyniadau
- Dolaucothi Estate (Wales), 1 canlyniadau
- Gold mines and mining -- Wales -- Carmarthenshire, 1 canlyniadau
