The Principia. Mathematical Principles of Natural Philosophy (Concise edition) (Part of Foundations) Isaac Newton and Marika Taylor eBook $7.42
The Physics. Writings on Natural Philosophy (Concise Edition) (Part of Foundations) Aristotle eBook $7.42
On the Revolutions of the Heavenly Spheres (Concise Edition) (Part of Foundations) Copernicus and Marika Taylor eBook $7.42