by Robert Silverberg
This title was published in the follow books. It can be rated independently of any volumes containing it.
World's Best Science Fiction: 1968 (1968)
by Donald A. Wollheim, Terry Carr
Anthology, 319 pages
Part 4 of the World's Best SF series.
Best SF: 1967 (1968)
by Harry Harrison, Brian W. Aldiss
Anthology, 256 pages
Part 1 of the Best SF (Aldiss and Harrison) series.
Criminal Justice Through Science Fiction (1977)
by Martin H. Greenberg, Joseph D. Olander
Anthology, 239 pages
Decade: The 1960s (1977)
by Brian W. Aldiss, Harry Harrison
Anthology, 287 pages
Part 3 of the 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.