What's the Use?: The Unreasonable Effectiveness of Mathematics
Ian Nicholas Stewart
The Science of Leonardo: Inside the Mind of the Great Genius ...
Fritjof Capra
A Primer on Logarithms
Shailesh Shirali
Inversive Geometry (Overview)
Stephen Huggett
Concise Encyclopedia of Philosophy of Language
P. Lamarque & Ronald E. Asher
Metaphysics - Aristotle
Aristotle