A Beginner's Guide to Graph Theory
W. D. Wallis
Learning Agile
Andrew Stellman
The Metaphysics Of Meaning - Notes
Jerrold J. Katz
Combinatorial Optimization: Algorithms and Complexity
Christos H. Papadimitriou & Kenneth Steiglitz
Ancient Epistemology
Lloyd P. Gerson & Lloyd Phillip Gerson
The Mathematica® Book
Stephen Wolfram