In 2 vols.
Previous ed.: published in 1 vol. as 'A guide to COM in the United Kingdom', 1972.
Bibliography: p.69-71. _ Includes index.
A guide to computer output microfilm by G.G. Baker and Associates. ISBN 0950208264. Published by G.G. Baker and Associates in 1975. Publication and catalogue information, links to buy online and reader comments.