The Concept of heresy in the Middle Ages (11th-13th c.) : proceedings of the international conference Louvain, May 13-16, 1973 /
Lourdaux, W.
Verhelst, D.
Katholieke Universiteit te Leuven (1970- ).Instituut voor Middeleeuwse Studies.
Leuven : University Press,
1976.
English, French, German, or Italian.
Sponsored by the Institute of Medieval Studies.
Includes bibliographical references and indexes.
Heresy