Masters of the Vortex

From Author Wars - https://authorwars.com/publications/masters-of-the-vortex-290600.html

Overview:

Title: Masters of the Vortex
Author: E. E. 'Doc' Smith
Year: 1977
ISBN-10: 0515046337
Publisher: Jove / HBJ
Price: $1.50
Pages: 191
Binding: Paperback
Type: Novel
Title Reference: Masters of the Vortex
Notes:
• "Eight previous printings" [all by Pyramid]
• "First Jove/HBJ edition published November 1977"
• No number line
• The artist is not credited, no visible signature on the artwork; credit from the first Pyramid printing
• ISBN is on the spine only; #A4633 on the cover
• Printed in the US