Ein hetifeddiaeth
Subtitle: gwasanaeth ar gyfer ieuenctid
By: cynlluniwyd gan J. Eric Jones.
Contributors: General Assembly of Unitarian and Free Christian Churches. Welsh Department.
Publisher: Gwasgy Fflam (ar ran) y Gymdeithas Undodaidd
Published: 1977
Place of publication: Aberdâr (i.e. Aberdare) (22 Stuart St., Aberdare, M. Glam.)
Language: wel
Subjects: Unitarian churches.; Public worship.