Form: Novelette
Year: 1972
Publication history:
- 1972 : Strange Bedfellows (hc) , Random House
- 1973 : Unfamiliar Territory (hc) , Scribner's, 212 pp.
- 1975 : Unfamiliar Territory (hc) , Gollancz (UK), 212 pp., 01919-0
- 1977 : Unfamiliar Territory (pb) , Coronet, 204 pp., 21978-5
- 1978 : Unfamiliar Territory (pb) , Berkley, 207 pp., ISBN 425-03882-3
- 1979 : Le livre d'or de la science-fiction: Robert Silverberg (pb) , Pocket, 448 pp., ISBN 2-266-00597-9, 5032 (in French "Pousser ou grandir")
- 1979 : Sex in the 21st Century (pb) , Panther
- 1986 : Beyond the Safe Zone (hc) , Donald I Fine, 472 pp., 60-8
- 1987 : Beyond the Safe Zone (pb) , Warner, 565 pp., ISBN 0-446-30173-6
- 1988 : Voir l'invisible (pb) , Pocket, 448 pp., ISBN 2-266-02713-1, 5032 (in French "Pousser ou grandir")
- 1989 : Beyond the Safe Zone (pb) , Warner, 565 pp., 30173-6
- 1995 : Beyond the Safe Zone (The Collected Stories of Robert Silverberg Volume 3) (tpb) , HarperCollins UK (UK), 605 pp., ISBN 0-586-21371-6
- 1995 : Beyond the Safe Zone (pb) , Grafton (UK), ISBN 0586213716
- 2000 : Fictionwise (ol) , Fictionwise
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