Courageous Cultures
Karin Hurt
Computers and Intractability: A Guide to the Theory of NP-completeness
Michael R. Garey & David S. Johnson
Computational Complexity A Modern Approach
SANJEEV ARORA
Unfinished tales of NĂºmenor and Middle-earth
J. R. R. Tolkien; Christopher Tolkien
How to Win Every Argument: The Use and Abuse of Logic
Madsen Pirie