Methods of Problem Solving Book 3
Peter Taylor & Jordan Tabov, Emil Kolev
New Essays in Free Logic: In Honour of Karel Lambert
E. Morscher & A. Hieke
Mathematical Plums
Ross Honsberger
Making Sense of Nonsense: The Logical Bridge Between Science ...
Raymond Moody
Invisible Helpers (Barnes & Noble Digital Library)
Charles Webster Leadbeater
Barnes & Noble Digital Library (1)
Predictably Irrational: The Hidden Forces That Shape Our Decisions
Dan Ariely