Frithjof Schuon: Messenger of the Perennial Philosophy
Michael Oren Fitzgerald
Mathematics and plausible reasoning, volumes 1 and 2
György Pólya
The Philosophy of Mathematical Practice
Paolo Mancosu
Advanced Grammar in Use with Answers
Martin Hewings
50 Economics Classics
Tom Butler-Bowdon
Cross-Linguistic Perspectives on Language Processing
M. de Vincenzi & V. Lombardo
Studies in Theoretical Psycholinguistics (25)