Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- University of Wales., 2 canlyniadau
- Gruffydd, R. Geraint, 1 canlyniadau
- Roberts, Wyn, 1930-, 1 canlyniadau
- Thomas, J. M. (John Meurig), 1 canlyniadau
- Thomas, George, 1909-1997, 1 canlyniadau
- Cledwyn of Penrhos, Cledwyn Hughes, Baron, 1916-2001, 1 canlyniadau
- Roberts, Brynley F, 1 canlyniadau
- Higher Education Funding Council for Wales., 1 canlyniadau
- Rosser, Melvyn, Sir, 1926-2001., 1 canlyniadau
- Pob un
- Broadcasting -- Wales., 1 canlyniadau
- Television broadcasting -- Wales., 1 canlyniadau
- Education, Bilingual -- Wales., 1 canlyniadau
- Welsh language -- Usage., 1 canlyniadau
- Welsh language -- Political aspects., 1 canlyniadau
- Traffic signs & signals -- Wales., 1 canlyniadau
- Census., 1 canlyniadau
- Demographic surveys -- Wales., 1 canlyniadau