Why Call Them Back from Heaven?

From Author Wars - https://authorwars.com/publications/why-call-them-back-from-heaven-279735.html

Overview:

Title: Why Call Them Back from Heaven?
Author: Clifford D. Simak
Year: 1977
ISBN-10: 0330025155
Publisher: Pan Books
Price: £0.60
Pages: 190+[1]
Binding: Paperback
Type: Novel
Title Reference: Why Call Them Back from Heaven?
Notes:
"This edition published 1970 by Pan Books Ltd". "2nd printing 1977"; no number line (month from Locus). The artist is not credited, the initials GdA are on the artwork. The ship is The Valley Forge from Douglas Trumbull's 1972 film Silent Running. UK 60p, Australia $1.75, New Zealand $1.85, not for sale in Canada.