Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Welsh language -- Comparison, 1 canlyniadau
- English language -- Comparison., 1 canlyniadau
- Welsh language -- Terms and phrases., 1 canlyniadau
- English language -- Terms and phrases., 1 canlyniadau
- Iron-works -- Wales -- Cyfarthfa., 1 canlyniadau
- Iron-works -- Wales -- Varteg, 1 canlyniadau
- Iron industry and trade -- Wales -- Cyfarthfa, 1 canlyniadau
- Iron industry and trade -- Wales -- Varteg, 1 canlyniadau