Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Condry, William, 1918-1998, 1 canlyniadau
- Boswall, Jeffery, 1931- -- Correspondence., 1 canlyniadau
- Condry, William, 1918-1998 -- Correspondence, 1 canlyniadau
- Waterton, Charles, 1782-1865, 1 canlyniadau
- Gurney, Samuel, 1816-1882, 1 canlyniadau
- Pugh, Robert, 1809?-1875, 1 canlyniadau
- Leatham, William Henry, 1815-1889, 1 canlyniadau
- Backhouse, Jonathan, 1779-1842, 1 canlyniadau
- Leatham, John Arthington, 1814-1857, 1 canlyniadau
- Barclay, Joseph Gurney, 1816-1898 -- Diaries, 1 canlyniadau
- Pob un
- Animals -- Wales, 3 canlyniadau
- Plants -- Wales, 2 canlyniadau
- Cadair Idris (Wales), 1 canlyniadau
- Wales -- Description and travel, 1 canlyniadau
- Snowdon (Wales), 1 canlyniadau
- Devil's Bridge (Wales), 1 canlyniadau
- Naturalists -- Wales, 1 canlyniadau
- Birds -- Wales, 1 canlyniadau
- Seasons -- Great Britain, 1 canlyniadau
- Wye, River, Valley (Wales and England), 1 canlyniadau