The Purity Plot

From Author Wars - https://authorwars.com/publications/the-purity-plot-45736.html

Overview:

Title: The Purity Plot
Author: E. E. 'Doc' Smith, Stephen Goldin
Year: 1980
ISBN-10: 0425044696
Publisher: Berkley Books
Price: $1.95
Pages: 184
Binding: Paperback
Type: Novel
Title Reference: The Purity Plot
Notes:
• "Berkley edition / June 1980" • Printing not stated, no number line • Cover art not credited; attributed to Stanislaw Fernandes based on information at Stephen Goldin's Web site • Reginald3 has this as the first edition, ignoring the '78 Panther edition