Was ist Mathematik?
Herbert Robbins & Richard Courant
Language and Empiricism - After the Vienna Circle
Siobhan Chapman & Arts & Humanities Research Council (great Britain)
Alchemy: An Introduction to the Symbolism and the Psychology
Marie-Luise von Franz
Sittig's Handbook of Pesticides and Agricultural Chemicals
Stanley A. Greene & Richard P. Pohanish
3D Game Engine Programming
Stefan Zerbst & Oliver Düvel
Descriptive psychology
Franz Brentano
International Library of Philosophy (1)