by Robert L. Forward
Paperback
details (UK).
(see also: eBook (Kindle))
details (USA).
(see also: eBook (Kindle) · Audible Audiobook)
details (Germany).
(see also: Kindle Ausgabe)
details (Canada).
(see also: eBook (Kindle) · Audible Audiobook)
ISBN: 978-0-450-05197-5
ISBN-10: 0-450-05197-8
New English Library Ltd · 1988