Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Playfair, Lyon Playfair, Baron, 1818-1898, 5 canlyniadau
- Sharpe, James, Glasgow, 4 canlyniadau
- Williams, W. R. Stuart, 4 canlyniadau
- Ramsay, Elizabeth, 3 canlyniadau
- Hills-Johnes, Elizabeth, 1834-1927, 2 canlyniadau
- Johnes, Charlotte Anna Maria, 1825-1911, 2 canlyniadau
- Museum of Economic Geology, 2 canlyniadau
- Ramsay, Eliza, 2 canlyniadau
- De La Beche, Henry T. (Henry Thomas), 1796-1855, 2 canlyniadau
- Forbes, Edward, 1815-1854, 2 canlyniadau
- Pob un
- Public health -- Scotland -- Glasgow., 2 canlyniadau
- Schools -- Wales -- Llandovery., 2 canlyniadau
- Lead mines and mining -- Wales -- Ceredigion, 1 canlyniadau
- Merioneth (Wales), 1 canlyniadau
- Wales, North -- Description and travel, 1 canlyniadau
- Europe -- Description and travel., 1 canlyniadau
- Scotland -- Description and travel, 1 canlyniadau
- Astronomy, 1 canlyniadau
- Education -- Wales., 1 canlyniadau
- Wales -- Politics and government, 1 canlyniadau
