Trilogy of the future /
Wollheim, Donald A.
Simak, Clifford D.,1904-1988.Trouble with Tycho.
Vance, Jack,1916-2013.Last castle.
Delany, Samuel R.Empire star.
London Sidgwick and Jackson
1972
This collection originally published as 'Ace science fiction reader'. New York: Ace Books, 1971
The trouble with Tycho/ [by] Clifford D. Simak -- The last castle/ [by] Jack Vance -- Empire star/ [by] Samuel R. Delany.