Gnostic Intensive
Živorad Mihajlović Slavinski
On Riemann's Theory of Algebraic Functions
Felix Klein & Frances Hardcastle
Our Life with Mr. Gurdjieff
Thomas de Hartmann & Olga de Hartmann
The Pocket Enneagram
Helen Palmer
Philosophy of Mind
Andrew Pessin
Problems of Ethics
Moritz Schlick & David Rynin