Cyhoeddwyd yn wreiddiol = Originally published: 1976.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Y traddodiad barddol by Gwyn Thomas. ISBN 9780708326213. Published by Gwasg Prifysgol Cymru in 2012. Publication and catalogue information, links to buy online and reader comments.
