Worlds of IF - Science Fiction: November 1963 Volume 13, No. 5
Illustrations by Ed Emshwiller, Jack Gaughan, Nodel, Virgil Finlay. Cover by Jack Gaughan (for "Muck Man")

Novelettes: "The Governor of Glave" by Keith Laumer (a "Retief" story)
"Muck Man" by Fremont Dodge
"A Better Mousetrap" by John Brunner

Stories: "Second-Class Citizen" by Damon Knight
"Long Day in Court" by Jonathan Brand

Serial: "The Reefs of Space" (Conclusion) by Jack Williamson & Frederik Pohl

Feature: "Glop, Goosh and Gilgamesh" by Theodore Sturgeon

Edited by Frederik Pohl. Theodore Sturgeon is Feature Editor.