Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Chater, A. O., 3 canlyniadau
- Chater, A. O. -- Correspondence., 3 canlyniadau
- Vaughan, H.R.H. 1893-1978, 2 canlyniadau
- Bowen, E. G. (Emrys George), 1900- -- Correspondence., 2 canlyniadau
- Lhuyd, Edward, 1660-1709, 1 canlyniadau
- Borrow, George, 1803-1881, 1 canlyniadau
- Roberts, Brynley F, 1 canlyniadau
- Bowen, E. G. (Emrys George), 1900- -- Correspondence, 1 canlyniadau
- Vaughan, Irene, 1890-1993 -- Correspondence, 1 canlyniadau
- Vaughan, Irene 1890-1993, 1 canlyniadau
- Pob un
- Ynys-hir Nature Reserve (Ceredigion, Wales), 1 canlyniadau
- Industries -- Wales -- History, 1 canlyniadau
- Insects -- Wales, 1 canlyniadau
- Peregrine falcon -- Wales, 1 canlyniadau
- Sorbus -- Wales., 1 canlyniadau
- Bardsey Island (Wales), 1 canlyniadau
- Smelting furnaces -- Wales -- Furnace (Ceredigion), 1 canlyniadau
- Ysgubor-y-coed (Ceredigion, Wales) -- History., 1 canlyniadau
