OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Llyfryddiaeth llenyddiaeth gymraeg. Cyfrol 2, 1976-1986 by Gareth Watts. ISBN 070831161X. Published by Gwasg Prifysgol Cymru in 1993. Publication and catalogue information, links to buy online and reader comments.
