Yes or No?: Straight Answers to Tough Questions About Christianity
Peter J. Kreeft
The Ideas That Made the Modern World
Encyclopaedia Britannica, Inc.
A Dictionary of Literary Symbols
Michael Ferber
Society and Language Use
Jef Verschueren & Jürgen Jaspers & Jan-Ola Östman
Race, Language, and Culture
Franz Boas
Tibetan Yoga and Secret Doctrines
W. Y. Evans-Wentz
The Tantric Mysticism of Tibet: A Practical Guide
John Blofeld & Allan R. Bomhard