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Dewis pwnc arall neu clirio pob hidlydd.
Rhyddhawyd ar: 6 December 2019 | Gwybodaeth gorfforaethol
In July 2016, Office for National Statistics (ONS) held a small online test in Telford and the Wrekin.
Rhyddhawyd ar: 22 October 2021 | Gwybodaeth gorfforaethol
A study about the experiences and opinions of people who have been contacted by the NHS Test and Trace system after being in close contact with someone who tested positive for coronavirus (COVID-19).
Rhyddhawyd ar: 18 January 2016 | Gwybodaeth gorfforaethol
Describes the questions that were tested during the 2007 Census Test in England and Wales.
Rhyddhawyd ar: 10 February 2020 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 27 November 2020 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 29 March 2017 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 29 July 2021 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 18 March 2022 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 16 July 2020 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 9 February 2021 | Gwybodaeth gorfforaethol
