Earth

From Author Wars - https://authorwars.com/publications/earth-11740.html

Overview:

Title: Earth
Author: David Brin
Year: 1991
Publisher: Bantam Spectra / QPBC
Price: $9.95
Pages: 601
Binding: Trade Paperback
Type: Novel
Title Reference: Earth
Notes: This is identical to the Bantam edition except it lacks an ISBN and price and the jacket is printed as the paperback cover.
This was also available to BOMC members.