Inventive Thinking Through TRIZ: A Practical Guide
Michael A. Orloff
The Crusades
Nikolas Jaspert
Muslim-Christian Polemic During the Crusades: The Letter From ...
Rifaat Y. Ebied & David Richard Thomas
Philosophy and the Foundations of Dynamics
Lawrence Sklar
Thought and Language, Revised and Expanded Edition
Lev S. Vygotsky
A Study of Gurdjieff's Teaching
Kenneth Walker