Enneagram
Don Richard Riso & Russ Hudson
Ideas of History; Volume 1, Speculative Approaches to History
Ronald H. Nash
The Mathematica® Handbook
Martha L. Abell & James P. Braselton
The Geostrategic Triad: Living with China, Europe, and Russia
Zbigniew Brzezinski
Space and Time in Contemporary Physics: An Introduction to the ...
Moritz Schlick
Reasoning in Science and Mathematics
Richard L. Epstein
Conventional Gestures: Meaning and Methodology
Cause and Effect, Conditionals, Explanations
Prescriptive Reasoning