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Archival description
Llyfrgell Genedlaethol Cymru = The National Library of Wales Cymdeithas yr Iaith Gymraeg.
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Welsh Language Society court cases = : Achosion llys Cymdeithas yr Iaith,
Welsh Language Society court cases = : Achosion llys Cymdeithas yr Iaith,
Scrapbook 1989-1993,
Scrapbook 1989-1993,
Rhys Evans research papers,
Rhys Evans research papers,
Consumer,
Consumer,
Cliff Bere Papers,
Cliff Bere Papers,
Papurau Alwyn D. Rees,
Papurau Alwyn D. Rees,
Llythyrau,
Llythyrau,
Gohebiaeth gyffredinol 1970-1974,
Gohebiaeth gyffredinol 1970-1974,
Papurau Dr John Davies,
Papurau Dr John Davies,
Papurau Cynog Dafis,
Papurau Cynog Dafis,
Papurau Ymchwil Dylan Phillips,
Papurau Ymchwil Dylan Phillips,
Archif Cymdeithas yr Iaith Gymraeg, Rhanbarth Morgannwg Gwent
Archif Cymdeithas yr Iaith Gymraeg, Rhanbarth Morgannwg Gwent
Llythyrau,
Llythyrau,
Papurau Cymdeithas yr Iaith (Rhodri Williams),
Papurau Cymdeithas yr Iaith (Rhodri Williams),