Llawlyfr dwyieithog i gymdeithasau =
Subtitle: Bilingual handbook for societies.
Contributors: Joint Working Party on Bilingualism in Dyfed.
Publisher: Joint Working Party on Bilingualism in Dyfed =  Cydweithgor Dwyieithrwydd yn Nyfed
Published: 1990
Place of publication: Carmarthen
Language: wel