Who?

From Author Wars - https://authorwars.com/publications/who-800491.html

Overview:

Title: Who?
Author: Algis Budrys
Year: 1963
Publisher: Gollancz
Price: 15/-
Pages: 176
Binding: Hardcover
Type: Novel
Title Reference: Who?
Notes:
- Printing history:
  - First Published August 1962
  - Second Impression September 1962
  - Third Impression March 1963
- Made and printed in Great Britain
- "Third Impression" on front cover