Dark Matter and Dark Energy
Brian Clegg
A History of the Crusades: Volume 2, the Kingdom of Jerusalem
Steven Runciman
The Oxford Handbook of Modern Diplomacy
Andrew F. Cooper & Jorge Heine & Ramesh Thakur & Ramesh Chandra Thakur
Harold : the Last of the Saxon Kings — Complete
Edward Bulwer-Lytton
The Oxford Dictionary of Byzantium
Alexander P. Kazhdan
Digitizing Medieval and Early Modern Culture
Brent Nelson & Melissa Terras