Al filo del tiempo
David Grinnell
Cenit (5)
Invasores de la tierra
William Tenn & Theodore Sturgeon & Edgar Pangborn & Mildred Clingerman & Donald A. Wollheim & Eric Frank Russell & Murray Leinster & Anthony Boucher & Katherine MacLean & Mack Reynolds & David Grinnell & Allen Kim Lang & Edward Grendon & Howard Koch & Milton Lesser
Galaxia (29)