- CG6/31
- Ffeil
- 1956-1965
Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Welsh language -- Usage, 15 canlyniadau
- Education, Bilingual -- Wales, 8 canlyniadau
- Bilingualism -- Wales, 7 canlyniadau
- Welsh language -- Study and teaching, 3 canlyniadau
- Welsh language -- Statistics, 1 canlyniadau
- Broadcasting -- Wales, 1 canlyniadau
- Civil service -- Great Britain -- Examinations, 1 canlyniadau