Kommentar zu Kants Kritik der reinen Vernunft
Hans Vaihinger
Lectures in Universal Algebra
L. Szabó & Á Szendrei
The Early Mathematical Manuscripts of Leibniz
Gottfried Wilhelm Freiherr von Leibniz
The Problems of Mathematics
Ian Nicholas Stewart
Spring Security in Action
Laurentiu Spilca
Ender's Game
Orson Scott Card
Xenocide