Remarks on the History and Philosophy of Mathematics
Robert L. Long
CRC Concise Encyclopedia of Mathematics
Eric W. Weisstein
The Riemann Zeta-Function
Anatoliĭ Alekseevich Karat︠s︡uba & Sergeĭ Mikhaĭlovich Voronin
How Do We Know?: An Introduction to Epistemology
James K. Dew Jr. & Mark W. Foreman
The philosophy of Proclus - The Final Phase of Ancient Thought
Laurence Jay Rosàn
The Magician's Nephew
C. S. Lewis & Pauline Baynes
Chronicles of Narnia: Publication order (6)