OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
The flames of Long Kesh, 15-16 October, 1974 ; [and], The murder of Hugh Gerard Coney, internee, 6 November 1974 by Denis Faul. Published by Fr Denis Faul in 1974. Publication and catalogue information, links to buy online and reader comments.