Form: Novelette
Year: 1968
Publication history:
- 1968 : Fantasy & Science Fiction October 1968 (m) ,
- 1970 : Parsecs and Parables (hc) , Doubleday, 203 pp.
- 1973 : Earth's Other Shadow (pb) , Signet, 207 pp.
- 1973 : Parsecs and Parables (hc) , Hale, 203 pp., 3889-X
- 1975 : Earth's Other Shadow (pb) , Signet, Q5338
- 1976 : Nightmare Garden (pb) , Manor
- 1977 : Earth's Other Shadow (hc) , Millington
- 1978 : Earth's Other Shadow (pb) , Panther, 222 pp., 04742-5
- 1979 : Le livre d'or de la science-fiction: Robert Silverberg (pb) , Pocket, 448 pp., ISBN 2-266-00597-9, 5032 (in French "Quand les arbres ont des dents")
- 1982 : World of a Thousand Colors (hc) , Arbor House
- 1983 : World of a Thousand Colors (tpb) , Priam, 329 pp., 493-3
- 1984 : World of a Thousand Colors (pb) , Bantam, 331 pp., ISBN 0-553-24059-5
- 1988 : Voir l'invisible (pb) , Pocket, 448 pp., ISBN 2-266-02713-1, 5032 (in French "Quand les arbres ont des dents")
- 1997 : Ringing the Changes (The Collected Stories of Robert Silverberg Volume 5) (tpb) , HarperCollins UK (UK), 359 pp., ISBN 0-586-21373-2
- 2002 : Le Chemin de la nuit: Nouvelles au fil du temps, tome 1, 1953-1970 (tpb) , Flammarion (France), 727 pp., ISBN 2080682350, 32 (in French "Les arbres qui avaient des dents")
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