What Is Mathematical Logic?
John N. Crossley
Adventures in Group Theory: Rubik's Cube, Merlin's Machine, ...
David Joyner
A New German Idealism: Hegel, Žižek, and Dialectical Materialism
Adrian Johnston
Knowledge Graphs Applied
Alessandro Negro & Vlastimil Kus & Guiseppe Futia & Fabic Montagna
The Power of Divine Eros
A. H. Almaas
Main Currents in Sociological Thought: Volume 2
Raymond Aron
Routledge Classics (1)
History of Western Philosophy
Bertrand Russell