Worlds of IF - Science Fiction: September-OCTOBER 1971
All illustrations by Jack Gaughan. Cover photography by Bruce Roggeri (for "The Stainless Steel Rat Saves the World.")

Novelette: "The Stainless Steel Rat Saves the World" by Harry Harrison.

Novel: "The All-Together Planet" by Keith Laumer (expanded to Retief's Ransom.)

Stories: "To Kill a Venusian" by Irwin Ross
"One Moment on the Sand" by Barry Weissman
"After the End and Before the Beginning" by William Rotsler
"Abyss of Tartarus" by Robert F. Young (incorporated into Starfinder.)

Feature: "Death Comes to the Megafauna" by L. Sprague de Camp. (science)

Ejler Jakobsson is editor, Judy-Lynn Benjamin is managing editor, Lester del Rey is feature editor, Jack Gaughan is Associate Art Director -he does almost all covers and art for Galaxy, IF, Worlds of Fantasy and Worlds of Tomorrow, giving them a very consistent and recognizable look.