Hacking: the Art of Exploitation 2nd Edition with CD Unopened by Jon Erickson

Language, Proof, and Logic : Second Edition by Jon Barwise, David Barker-Plummer

The PowerScore LSAT Reading Comprehension Bible by David M. Killoran, Jon M. De

The Debater's Guide, Fourth Edition - Paperback By Ericson, Jon M. - GOOD

Programming Pearls (2nd Edition) - Paperback By Bentley, Jon - GOOD

Language, Proof, and Logic : Second Edition by Jon Barwise, David Barker-Plummer