If, October 1967

From Author Wars - https://authorwars.com/publications/if-october-1967-58833.html

Overview:

Title: If, October 1967
Author: Frederik Pohl
Year: 1967
Publisher: Galaxy Publishing Corporation
Price: $0.60
Pages: 164
Binding: digest
Type: MAGAZINE
Title Reference: Enemy of the Silkies
Notes: Vol 17, No 10, Issue 119.
Cover illustrates "Ocean on Top" as noted on the Contents/copyright page (scanned version from archive.org).
The editorial is signed by The Editor but Frederik Pohl is credited in the table of contents.
"The Food of Mars" originally appeared in the book "On Tiptoe Beyond Darwin". The full text and images of this edition are available at The Internet Archive, see web page for link.