Worlds of Tomorrow, February 1967

From Author Wars - https://authorwars.com/publications/worlds-of-tomorrow-february-1967-62306.html

Overview:

Title: Worlds of Tomorrow, February 1967
Author: Frederik Pohl
Year: 1967
Publisher: Galaxy Publishing Corp.
Price: $0.50
Pages: 164
Binding: digest
Type: MAGAZINE
Title Reference: Station HR972
Notes:
• Vol. 4, No. 3. Issue 22.
• Cover illustrates "The Planet Wreckers" as noted on the Contents page (scanned version from archive.org).