The Far Ends of Time and Earth

From Author Wars - https://authorwars.com/publications/the-far-ends-of-time-and-earth-39608.html

Overview:

Title: The Far Ends of Time and Earth
Author: Isaac Asimov
Year: 1979
ISBN-10: 0385132697
Publisher: Doubleday
Price: $12.95
Pages: xiv+538
Binding: Hardcover
Type: Omnibus
Title Reference: Pebble in the Sky
Notes:
LCCN 77-25574 is the source for the price
Page numbers seem to be from the SFBC edition which has a different page count, verifier please double-check