Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Geikie, James, 1839-1915., 3 canlyniadau
- Lyell, Charles, Sir, 1797-1875., 2 canlyniadau
- Ramsay, Louisa, Lady, fl. 1852-1915, 2 canlyniadau
- Lloyd George, David, 1863-1945., 1 canlyniadau
- Edwards, Alfred George, 1848-1937., 1 canlyniadau
- University of Oxford, 1 canlyniadau
- Jesus College (University of Oxford), 1 canlyniadau
- Madog ab Owain Gwynedd, 1150-1180?, 1 canlyniadau
- Rhys, John, Sir, 1840-1915, 1 canlyniadau
- David, Saint, active 6th century, 1 canlyniadau
- Pob un
- Welsh Indians., 1 canlyniadau
- United States -- Discovery and exploration, 1 canlyniadau
- 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
