The Dark Ages

From Author Wars - https://authorwars.com/publications/the-dark-ages-861661.html

Overview:

Title: The Dark Ages
Author: Isaac Asimov
Year: 1968
Publisher: Houghton Mifflin
Binding: Hardcover
Type: Non-fiction
Title Reference: The Dark Ages
Notes: Source:
- asimov.fandom.com: title, author, publisher, date(yyyy)