Contents: Opus 100. This collection originally published: Boston : Houghton Mifflin, 1969 - Opus 200. This collection originally published: Boston : Houghton Mifflin, 1979.
Opus : a selection from the first 200 books by Isaac Asimov. ISBN 0233971890. Published by Deutsch in 1980. Publication and catalogue information, links to buy online and reader comments.