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Hidlo yn ôl (5 canlyniad, wedi trefnu yn ôl y diweddaraf)
Adroddiad thematig | 01/11/2014
pdf, 526.02 KB Added 01/11/2014
Adroddiad thematig | 01/06/2013
pdf, 743.13 KB Added 01/06/2013
Adroddiad thematig | 01/05/2012
pdf, 716.76 KB Added 01/05/2012
Adroddiad thematig | 01/06/2011
pdf, 544.37 KB Added 01/06/2011