Hannah Arendt: For Love of the World
Elisabeth Young-Bruehl
Entertaining Mathematical Puzzles
Martin Gardner
Mental Chemistry
Charles F. Haanel
Classical NEG Raising: An Essay on the Syntax of Negation
Chris Collins & Paul M. Postal
The Big Questions: Philosophy
Simon Blackburn
Portugese
Tait, Norma de Oliveira
Portuguese: A Linguistic Introduction
Milton M. Azevedo