Y Ddarlith Davies am 1988 = The Davies Lecture for 1988.
Yn cynnwys mynegai = Includes index.
Cyhoeddwyd ar ran Bwrdd y Ddarlith Davies = Published on behalf of Bwrdd y Ddarlith Davies.
Hen destament 1988 : cydymaith i'r cyfieithiad newydd by Gwilym H. Jones. ISBN 1874786372. Published by Gwasg Pantycelyn in 1995. Publication and catalogue information, links to buy online and reader comments.