Earth

From Author Wars - https://authorwars.com/publications/earth-11741.html

Overview:

Title: Earth
Author: David Brin
Year: 1990
Publisher: Bantam Spectra / BOMC
Price: $15.95
Pages: 601
Binding: Hardcover
Type: Novel
Title Reference: Earth
Notes:
• Identifiable as a BOMC from the lack of a price on the dust jacket and a blind-stamp on the back board [⅛" round 'dent'] • Copyright page has full statements of edition, number line and complete CIP data • Date/price from Locus1 which notes no ISBN, but that's for the jacket