Cymru ddwyieithog mewn Ewrop amlieithog = [Bilingual Wales within a multilingual Europe] /
Williams, Colin H.
Dyfed (Wales).County Council.
Iaith Cyf.
Llanbedr Pont Steffan : Cwmni Iaith Cyf,
1995.
Dyfed County Council in conjuncion with Cwmni IAITH Cyf -- t.p.
Includes bibliographical references.
Bilingualism
Multilingualism