The Foundation Trilogy

From Author Wars - https://authorwars.com/publications/the-foundation-trilogy-14460.html

Overview:

Title: The Foundation Trilogy
Author: Isaac Asimov
Year: 1981
ISBN-10: 0380001012
Publisher: Avon
Price: $7.95
Pages: 227+225+227
Binding: Trade Paperback
Type: Omnibus
Title Reference: Second Foundation
Notes: Unknown