Still River

From Author Wars - https://authorwars.com/publications/still-river-113221.html

Overview:

Title: Still River
Author: Hal Clement
Year: 1988
ISBN-10: 0747401179
Publisher: Sphere Books
Price: £3.50
Pages: 280
Binding: Paperback
Type: Novel
Title Reference: Still River
Notes:
"First published in Great Britain by Sphere Books Ltd, 1988" Printing not stated, no number line Month from Locus1. No cover art credit on the book, but artwork matches that on the cover of The Legacy of Heorot here, (minus the shuttlecraft) where it is credited to Chris Moore. AUST $9.99, N.Z. $13.99