"A Gollancz eBook."
Artifact. Originally published: New York, NY: T. Doherty Associates, 1985
Cosm. Originally published: New York: Avon Eos, 1998
Eater. Originally published: New York: EOS, 2000.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
SF Gateway omnibus : Artifact, Cosm, Eater by Gregory Benford. ISBN 9781473202030. Published by Gateway in 2014. Publication and catalogue information, links to buy online and reader comments.
