Survey of public views on the coronavirus (COVID-19) adults aged 16 to 74, 23 October to 7 December 2020, file type: ODS, file size: 17 KB
Arolwg o farn y cyhoedd ar y conorafeirws (COVID-19), oedolion 16 i 74 oed, 19 Mawrth 2020 i 11 Hydref 2021, Saesneg yn unig, math o ffeil: ODS, maint ffeil: 8 KB