Stanford Encyclopedia of Philosophy
SEP
An Elementary Introduction to the Hopf Fibration
David W. Lyons
Ken Wilber - Filasofia Transpersonal
Ángel Rguez
Dismantling America: And Other Controversial Essays
Thomas Sowell
Astrophysics Through Computation: with Mathematica® Support
Brian Koberlein & David Meisel
A Functional Linguistic Perspective on Developing Language
Anne McCabe