Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Lyell, Charles, Sir, 1797-1875., 2 canlyniadau
- Geikie, James, 1839-1915., 2 canlyniadau
- David, Saint, active 6th century, 1 canlyniadau
- Thirlwall, Connop, 1797-1875, 1 canlyniadau
- Johnes, Charlotte Anna Maria, 1825-1911, 1 canlyniadau
- Ramsay, Louisa, Lady, fl. 1852-1915, 1 canlyniadau
- Godwin-Austen, Robert Alfred Cloyne , 1808-1884, 1 canlyniadau
- Milne, John 1850-1913., 1 canlyniadau
- Ramsay, John C., 1 canlyniadau
- Ramsay, William, Glasgow, 1 canlyniadau
- Pob un
- France -- Description and travel, 1 canlyniadau
- Dolaucothi Estate (Wales), 1 canlyniadau
- Glaciers -- Europe, 1 canlyniadau
- Glaciers -- Faroe Islands, 1 canlyniadau
- Geology -- Italy., 1 canlyniadau
- Reflecting telescopes -- Design and construction., 1 canlyniadau
- Strontium -- Scotland, 1 canlyniadau
- Carbonate minerals -- Scotland, 1 canlyniadau
- Thirlmere (England), 1 canlyniadau
- Llanddewi Brefi (Wales) -- Antiquities, 1 canlyniadau
