Still River

From Author Wars - https://authorwars.com/publications/still-river-420191.html

Overview:

Title: Still River
Author: Hal Clement
Year: 1989
ISBN-10: 0345329171
Publisher: Del Rey / Ballantine
Price: C$5.50
Pages: viii+262
Binding: Paperback
Type: Novel
Title Reference: Still River
Notes:
• "First Mass Market Edition: February 1989" • Printing not stated, no number line. • "Cover art by Don Dixon" on the copyright page, no visible signature on the artwork • $3.95 in the US • Cover printed in the US, book in Canada