Exploring Black Holes: Introduction to General Relativity
Edwin F. Taylor & John Archibald Wheeler & Edmund William Bertschinger
The Spectrum of Consciousness
Kenneth E. Wilber
Quest Books (2)
Build the New Instant Boats
Harold H. Payson
Georg Cantor: His Mathematics and Philosophy of the Infinite
Joseph Warren Dauben
Great books of the Western World - Volume 21
Encyclopaedia Britannica, Inc
Late Merovingian France
Paul Fouracre & Richard A. Gerberding