Welsh language use in education (Welsh language use survey, July 2019 to March 2020), file type: ODS, file size: 37 KB
Defnydd o’r Gymraeg mewn addysg (Arolwg defnydd iaith, Gorffennaf 2019 i Fawrth 2020), math o ffeil: ODS, maint ffeil: 38 KB