Philosophical Explanations
Robert Nozick
Enneagram
Don Richard Riso & Russ Hudson
A History of Medieval Philosophy
Frederick C. Copleston
Gesammelte Werke - Band II - Astrnomie Pars Optica
Johannes Kepler & Franz Hammer
APA Concise Dictionary of Psychology
American Psychological Association
Murder on the Lusitania: A Gripping Edwardian Whodunnit
Edward Marston