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Hidlo yn ôl (18 canlyniad, wedi trefnu yn ôl y diweddaraf)
Adroddiad thematig | 20/09/2017
pdf, 1.31 MB Added 20/09/2017
Adroddiad thematig | 10/06/2015
pdf, 963.55 KB Added 10/06/2015
Adroddiad thematig | 01/09/2014
pdf, 938.24 KB Added 01/09/2014
Adroddiad thematig | 01/07/2014
pdf, 1.01 MB Added 01/07/2014
Adroddiad thematig | 01/12/2013
pdf, 1.07 MB Added 01/12/2013
Adroddiad thematig | 01/10/2013
pdf, 439.42 KB Added 01/10/2013
Adroddiad thematig | 01/03/2010
pdf, 1.27 MB Added 01/03/2010