Test, Trace, Protect (contact tracing for coronavirus (COVID-19)): up to 12 December 2020, file type: ODS, file size: 23 KB
Profi, Olrhain, Diogelu (olrhain cysylltiadau ar gyfer coronafeirws (COVID-19)): hyd at 12 Rhagfyr 2020, math o ffeil: ODS, maint ffeil: 23 KB