The Best of Sci-Fi No. 4

From Author Wars - https://authorwars.com/publications/the-best-of-sci-fi-no-4-538168.html

Overview:

Title: The Best of Sci-Fi No. 4
Author: Judith Merril
Year: 1967
Publisher: Mayflower-Dell
Price: 5/-
Pages: 382
Binding: Paperback
Type: Anthology
Title Reference: Seven-Day Terror
Notes:
"Published as a Mayflower-Dell paperback, August, 1965" & "Reprinted 1967"
Printing not stated, no number line
The artist is not credited, no visible signature on the artwork
"The Best of Sci-Fi 4" on cover and spine, "The Best of Sci-Fi No. 4" on title page.