Cows Can't Eat Grass

From Author Wars - https://authorwars.com/books/cows-cant-eat-grass-840457.html

Overview:

Title: Cows Can't Eat Grass
Author: Kelly Freas
Year: 1967
Type: Interior Art

Editions/Publications:

Unknown. Analog Science Fiction -> Science Fact, August 1967 (Unknown, Kelly Freas, Condé Nast, $0.60, 180 pages, digest, MAGAZINE)