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Hidlo yn ôl (5 canlyniad, wedi trefnu yn ôl y diweddaraf)
Adroddiad thematig | 20/10/2020
pdf, 1.98 MB Added 20/10/2020
Adroddiad thematig | 20/12/2018
pdf, 682.96 KB Added 20/12/2018
Adroddiad thematig | 01/02/2009
pdf, 329.38 KB Added 01/02/2009
Adroddiad thematig | 01/06/2008
pdf, 357.1 KB Added 01/06/2008