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Ronald H. Nash
Christian Mysticism
William Ralph Inge
Marxism Unmasked: From Delusion to Destruction
Ludwig von Mises
Philosophy and Theology in the Middle Ages
G. R. Evans
Knowledge Representation
Ronald J. Brachman & Hector J. Levesque & Ray Reiter
Representation and Inference for Natural Language: A First Course ...
Patrick Blackburn & Johannes Bos