CK-12 Trigonometry - Second Edition
Ck-12 Foundation
Historical Evolution of World-systems
Christopher Chase-Dunn & E. N. Anderson
Soames' Two-Dimensionalism (Article)
David John Chalmers
Ten Lectures on Cognitive Sociolinguistics
Dirk Geeraerts
Kickback: Exposing the Global Corporate Bribery Network
David Montero
Serpent of Wisdom: And Other Essays on Western Occultism
Donald Tyson