Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Playfair, Lyon Playfair, Baron, 1818-1898, 2 canlyniadau
- De La Beche, Henry T. (Henry Thomas), 1796-1855, 2 canlyniadau
- Sharpe, James, Glasgow, 2 canlyniadau
- Williams, W. R. Stuart, 2 canlyniadau
- Dolaucothi Estate (Wales), 1 canlyniadau
- Hills-Johnes, Elizabeth, 1834-1927, 1 canlyniadau
- Great Exhibition (1851 : London, England), 1 canlyniadau
- Johnes, Charlotte Anna Maria, 1825-1911, 1 canlyniadau
- Smyth, Warington W. Sir, (Warington Wilkinson), 1817-1890., 1 canlyniadau
- Geological Survey of Great Britain., 1 canlyniadau
- Pob un
- Merioneth (Wales), 1 canlyniadau
- Wales, North -- Description and travel, 1 canlyniadau
- Europe -- Description and travel., 1 canlyniadau
- Geology -- Wales -- Llandegla, 1 canlyniadau
- Sulfurous water -- Wales -- Llandegla, 1 canlyniadau
- Schools -- Wales -- Llandovery., 1 canlyniadau
- Catholics., 1 canlyniadau
- Catholic Church, 1 canlyniadau
- Sugar trade., 1 canlyniadau
- Fairs -- Wales -- Llandovery, 1 canlyniadau
