by Gerard O'Neill
Paperback
details (USA).
(see also: eBook (Kindle))
details (UK).
(see also: eBook (Kindle))
details (Germany).
(see also: Kindle Ausgabe)
details (Canada).
(see also: eBook (Kindle))
ISBN: 978-0-9622379-0-4
ISBN-10: 0-9622379-0-6
Space Studies Inst Pr · 1989