by Robert Silverberg
This title was published in the follow books. It can be rated independently of any volumes containing it.
Terrorists of Tomorrow (1986)
by Poul Anderson, Martin H. Greenberg, Charles G. Waugh
Anthology, 376 pages
The Mammoth Book of New World Science Fiction: Short Novels of the 1960s (1991)
by Charles G. Waugh, Isaac Asimov, Martin H. Greenberg
Anthology, 506 pages
Part of the The Mammoth Book of ... Science Fiction (by decade) series.
To the Dark Star: 1962-69 (2007)
by Robert Silverberg
Collection, 392 pages
Part 2 of the The Collected Stories of Robert Silverberg (Subterranean Press) series.