The Square Root of Man

From Author Wars - https://authorwars.com/publications/the-square-root-of-man-268152.html

Overview:

Title: The Square Root of Man
Author: William Tenn
Year: 1971
ISBN-10: 0345021290
Publisher: Ballantine Books (UK)
Price: £0.30
Pages: 220
Binding: Paperback
Type: Collection
Title Reference: The Square Root of Man
Notes:
"BALLANTINE BOOKS, LTD" "Copyright © 1968 by William Tenn" "First United States Printing: June, 1968" "First United Kingdom Printing: March, 1971" Other prices: Australia 95c, New Zealand 95c, South Africa 75c. "The Lemon-Green Spaghetti-Loud Dynamite-Dribble Day" definitely has the leading definite article, otherwise this seems pretty close to the US version: even the "U6132" on the spine, although internally it has the SBN 345-02129-0. Cover artist credited here Back cover states "This is an original publication - not a reprint"