Norman Roth 
Routledge Revivals: Medieval Jewish Civilization (2003) [PDF ebook] 
An Encyclopedia

First published in 2003, this is the first encyclopedic work to focus exclusively on medieval Jewish civilization, from the fall of the Roman Empire to about 1492. Based on the research of an international, multidisciplinary team of specialist contributors, the more than 150 alphabetically organized entries, written by scholars from around the world, include biographies, countries, events, social history, and religious concepts. The coverage is international, presenting people, culture, and events from various countries in Europe, Africa, and the Middle East.