To Open the Sky

From Author Wars - https://authorwars.com/publications/to-open-the-sky-181161.html

Overview:

Title: To Open the Sky
Author: Robert Silverberg
Year: 1977
ISBN-10: 0722178271
Publisher: Sphere
Price: £0.85
Pages: 203
Binding: Paperback
Type: Novel
Title Reference: To Open the Sky
Notes:
"First published in Great Britain by Sphere Books Ltd 1970" "Reprinted 1977"; no number line The artist is not credited, initials PE are on the ship under the cockpit. UK 85p, Australia $2.75, New Zealand $2.75, Rep. of Ireland 93 1/2p, Malta 90c.