Lectures on the Orbit Method
Aleksandr Aleksandrovich Kirillov
Mathematica®: The Student Book
Stephen Wolfram & George Beck
Philosophy of Physics: Quantum Theory
Tim Maudlin
The Crusades: A Very Short Introduction
Christopher Tyerman
The Works of Saint Augustine: A Translation for the 21st Century
Saint Augustine (of Hippo) & Augustin ((saint ;)
The Gnostics: The First Christian Heretics
Sean Martin