Die Philosophie des Als Ob: System der theoretischen, praktischen ...
Hans Vaihinger
Explanation and Cognition
Robert Anton Wilson & Robert Andrew Wilson & Frank C. Keil
Lectures on Natural Right and Political Science: The First Philosophy ...
Georg Wilhelm Friedrich Hegel
The Science Book: Big Ideas Simply Explained
Dk
Fuzzy Topology
N. Palaniappan
Success and Understanding
Jean Piaget
Studies in Philosophy, Politics and Economics
Friedrich August Hayek
Freud and Jung, Conflicts of Interpretation
Robert S. Steele & Susan Virginia Swinney