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Dewis pwnc arall neu clirio pob hidlydd.
Rhyddhawyd ar: 21 February 2020 | Gwybodaeth gorfforaethol
Topic
Smoking, drinking and drug taking in Great Britain and associated deaths and illnesses.
Rhyddhawyd ar: 31 March 2020 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 13 November 2019 | Gwybodaeth gorfforaethol
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Rhyddhawyd ar: 1 May 2018 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 9 May 2022 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 5 April 2019 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 28 October 2022 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 8 December 2022 | Gwybodaeth gorfforaethol
