What Is This Thing Called Knowledge?
Duncan Pritchard
A Historical Dictionary of Germany's Weimar Republic, 1918-1933
Charles Paul Vincent & Harry Ritter
Psicología y religión
Carl Gustav Jung
Cambridge IGCSE Mathematics Core and Extended Workbook
Ric Pimentel & Terry Wall
Traktatus Elementare Begriffliche Philosophie
Christian Schmidt & Regius Crossanus
The Code Book
Simon Singh