Sundiver

From Author Wars - https://authorwars.com/publications/sundiver-360601.html

Overview:

Title: Sundiver
Author: David Brin
Year: 1983
ISBN-10: 0553207601
Publisher: Bantam Books
Price: $2.50
Pages: 340
Binding: Paperback
Type: Novel
Title Reference: Sundiver
Notes:
• Says illustrations by David S. Perry, not cover specifically.
• 4th printing by number line.
• Printing history is, 1st Feb 1980, 2nd Apr 1980, 3rd Nov 1981, no date for 4th.
• Includes Startide Rising in the list of authors works. Includes an ad / order form for Startide Rising "on sale August 15, 1983" this easily dates this publication to 1983 (since the 3rd printing was in 1981), and probably August or July.