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- 12Archive Collections
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- 11988-2007Ref:GB 210 4Location:National Library of Wales / Llyfrgell Genedlaethol CymruExtent:8 bocs ffeilShow on map
- 21984-2001Ref:GB 210 1Location:National Library of Wales / Llyfrgell Genedlaethol CymruExtent:20 bocs ffeilShow on map
- 31988-1999Ref:GB 210 2Location:National Library of Wales / Llyfrgell Genedlaethol CymruExtent:4 bocs ffeilShow on map
- 41995-1999Ref:GB 210 3Location:National Library of Wales / Llyfrgell Genedlaethol CymruExtent:2 bocs ffeilShow on map
- 51967-1998 /Ref:GB 210 CYMAEGLocation:National Library of Wales / Llyfrgell Genedlaethol CymruName of creator:Cymdeithas yr Iaith Gymraeg.Extent:2.762 metrau ciwbig (113 bocs)Language:Welsh English Cymraeg, SaesnegShow on map
- 62007.Ref:GB 210 NLW ex 2501Location:National Library of Wales / Llyfrgell Genedlaethol CymruName of creator:Cymdeithas yr Iaith Gymraeg.Extent:2 eitem mewn waledShow on map
- 71992-2002.Ref:GB 210 D/13Location:National Library of Wales / Llyfrgell Genedlaethol CymruExtent:1.25 cmShow on map
- 81988-1993Ref:GB 210 CC4Location:National Library of Wales / Llyfrgell Genedlaethol CymruExtent:3 foldersLanguage:Welsh, EnglishShow on map
- 91976Ref:GB 210 LW14/2/6Location:National Library of Wales / Llyfrgell Genedlaethol CymruExtent:Envelope, 9 itemsShow on map
- 101972-1979 /Ref:GB 210 CYMCASLocation:National Library of Wales / Llyfrgell Genedlaethol CymruName of creator:Cymdeithas yr Iaith Gymraeg Cell Casnewydd.Extent:2 ffolderLanguage:CymraegShow on map
- 111964-1969 /Ref:GB 210 CYMIONLocation:National Library of Wales / Llyfrgell Genedlaethol CymruName of creator:Cymdeithas yr Iaith Gymraeg Rhanbarth Ceredigion.Extent:0.003 metrau ciwbig (1 ffolder); 2 focs bychan (Mawrth 2009)Language:CymraegShow on map
- 121984-2007Ref:GB 210 CYMIAITHMORGWELocation:National Library of Wales / Llyfrgell Genedlaethol CymruName of creator:Cymdeithas yr Iaith Gymraeg Rhanbarth Morgannwg Gwent.Extent:0.306 metrau ciwbig (34 ffeil)Language:Welsh English Cymraeg a SaesnegShow on map