How to Solve It: A New Aspect of Mathematical Method
George Polya
Divine Proportions: Rational Trigonometry to Universal Geometry
Norman John Wildberger
Code The Hidden Language of Computer Hardware and Software
Charles Petzold
Treatise on conic sections
Apollonius, of Perga
Complete Works of Xenophon (Illustrated) (Delphi Ancient Classics)
Xenophon
Delphi Complete Works of Euripides (Illustrated)
Euripides
Delphi Complete Works of Plato (Illustrated)
Plato