Introduction to Logarithms: Pre-Calculus
Adrian Harrison
An Introduction to Riemannian Geometry - Lecture Notes
Sigmundur Gudmundsson
Encyclopedia of Ethics
Lawrence C. Becker & Charlotte B. Becker
Zero Limits
Joe Vitale & Ihaleakala Hew Len
The Story of Be: A Verb's-Eye View of the English Language
David Crystal
The Will to Believe
William James