Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Pennant, Thomas, 1726-1798, 8 canlyniadau
- Borlase, William, 1695-1772, 2 canlyniadau
- Jones, William, Sir, 1746-1794, 1 canlyniadau
- Henry, Matthew, 1662-1714, 1 canlyniadau
- Parr, Samuel, 1747-1825, 1 canlyniadau
- Roscoe, William, 1753-1831, 1 canlyniadau
- Gough, Richard, 1735-1809, 1 canlyniadau
- Amico, Vito, 1697-1762., 1 canlyniadau
- Bull, Richard, 1721-1805, 1 canlyniadau
- Gronovius, Laurentius Theodorus, 1730-1777, 1 canlyniadau
- Pob un
- Pennant, Thomas, 1726-1798 -- Correspondence, 8 canlyniadau
- Borlase, William, 1695-1772 -- Correspondence., 2 canlyniadau
- Griffith, Moses, 1747-1819, 1 canlyniadau
- Pennant, David, 1763-1841, 1 canlyniadau
- Myddelton, William, Inner Temple., 1 canlyniadau
- Morris, William, 1705-1763., 1 canlyniadau
- Pennant, David, 1763-1841 -- Correspondence., 1 canlyniadau
- Amico, Vito, 1697-1762 -- Correspondence., 1 canlyniadau
- Pontoppidan, Erich, 1698-1764., 1 canlyniadau
- Davies, Hugh, 1739?-1821., 1 canlyniadau
- Pob un
- Zoology -- Great Britain., 1 canlyniadau
- Crustacea -- Italy -- Sicily., 1 canlyniadau
- Mollusks -- Italy -- Sicily., 1 canlyniadau
- Shells -- Italy -- Sicily., 1 canlyniadau
- Snails -- Italy -- Sicily., 1 canlyniadau
- Natural history., 1 canlyniadau
- Fossils -- Collection and preservation -- Wales., 1 canlyniadau
- Seals (Animals) -- Pictorial works., 1 canlyniadau
- Birds -- Collection and preservation., 1 canlyniadau
- Puffins -- Wales., 1 canlyniadau
