Survey of public views on the coronavirus (COVID-19): 19 March 2020 to 4 April 2022, file type: ODS, file size: 12 KB
Arolwg o farn y cyhoedd ar y coronafeirws (COVID-19): 19 Mawrth 2020 i 4 Ebrill 2022, math o ffeil: ODS, maint ffeil: 11 KB