Published by The University of Chicago Press, Chicago, 1966
Paperback. xv, 172p. paperback, very good sixth impression with toned spine and minor foxing elsewhere, INSCRIBED by Kuhn, "Remembering some good talk at dinner, Tom Kuhn." Otto Bird's copy, with his ownership signature inside the front cover (Bird was the founder and first director of Notre Dame's "Great Books" program). Some minor markings scattered through the text. International Encyclopedia of Unified Science: Volumes I and II - Foundations of the Unity of Science. Volume II - Number 2.