books.google.co.nz - From the Viking invasions to the Crusades to the Hundred Years War, wars were crucial agents of change in medieval Europe. They fostered many economic and political changes. They also affected the science, technology, religion, and culture of the parties involved. This three-volume encyclopedia examines...http://books.google.co.nz/books/about/The_Oxford_Encyclopaedia_of_Medieval_War.html?id=mzwpq6bLHhMC&utm_source=gb-gplus-shareThe Oxford Encyclopaedia of Medieval Warfare and Military Technology
