Greek Philosophy: Part I, Thales to Plato
John Burnet
Ecoscience: Population, Resources, Environment
John P. Holdren & Paul R. Ehrlich & Anne H. Ehrlich
Xenocide
Orson Scott Card
Outlines of Psychology
Wilhelm Max Wundt
The Positive Philosophy of Auguste Comte V1
Auguste Comte & Harriet Martineau
Lebenswelt oder Natur: Schwacher Naturalismus und Naturbegriff ...
Walter Emanuel Simon