Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Playfair, Lyon Playfair, Baron, 1818-1898, 2 canlyniadau
- Forbes, Edward, 1815-1854, 2 canlyniadau
- Sharpe, James, Glasgow, 2 canlyniadau
- Williams, W. R. Stuart, 2 canlyniadau
- Dolaucothi Estate (Wales), 1 canlyniadau
- Peel, Robert, 1788-1850, 1 canlyniadau
- Latham, R. G. (Robert Gordon), 1812-1888., 1 canlyniadau
- Johnes, John, 1800-1876, 1 canlyniadau
- Royal Society of Arts (Great Britain), 1 canlyniadau
- Johnes, Charlotte Anna Maria, 1825-1911, 1 canlyniadau
- Pob un
- Wales, North -- Description and travel, 1 canlyniadau
- Geology -- Wales -- Llandegla, 1 canlyniadau
- Sulfurous water -- Wales -- Llandegla, 1 canlyniadau
- Public health -- Scotland -- Glasgow., 1 canlyniadau
- Tides -- England -- Lyme Regis, 1 canlyniadau
- Chitons., 1 canlyniadau
- Agriculture -- Wales -- Taliaris, 1 canlyniadau
- Epidemics -- Scotland -- Glasgow, 1 canlyniadau
- Quarries and quarrying -- Wales -- Llantysilio (Denbighshire), 1 canlyniadau
- Stonehenge (England) -- Description and travel, 1 canlyniadau
