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Hidlo yn ôl (6 canlyniad, wedi trefnu yn ôl y diweddaraf)
Adroddiad thematig | 12/06/2018
pdf, 1.06 MB Added 12/06/2018
Adroddiad thematig | 13/07/2017
pdf, 1.25 MB Added 13/07/2017
Adroddiad thematig | 01/02/2015
pdf, 820.13 KB Added 01/02/2015
Adroddiad thematig | 01/06/2014
pdf, 659.67 KB Added 01/06/2014
Adroddiad thematig | 01/06/2013
pdf, 758.13 KB Added 01/06/2013