The Penguin Dictionary of Mathematics: Fourth Edition
R. David Nelson
Action, Norms, and Practical Reasoning - Paper
Robert Brandom
Lo Inconsciente en la Vida Psíquica Normal y Patolólica
C. G. Jung
Ethics a history of moral thought by Peter Kreeft
Peter J. Kreeft
Algorithms and Complexity
Herbert S. Wilf
MI6 and the Machinery of Spying
Philip H. J. Davies