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Hidlo yn ôl (7 canlyniad, wedi trefnu yn ôl y diweddaraf)
Adroddiad thematig | 06/10/2017
pdf, 1.44 MB Added 06/10/2017
Adroddiad thematig | 02/01/2015
pdf, 582.1 KB Added 02/01/2015
Adroddiad thematig | 01/11/2014
pdf, 526.02 KB Added 01/11/2014
Adroddiad thematig | 01/06/2014
pdf, 659.67 KB Added 01/06/2014
Adroddiad thematig | 01/06/2013
pdf, 743.13 KB Added 01/06/2013
Adroddiad thematig | 01/03/2010
pdf, 1.27 MB Added 01/03/2010