Columbia subject headings:
Christian heresies--France--Languedoc--History--Middle Ages, 600-1500.
Christianity and other religions.
Cluny (Benedictine abbey)--History.
Cluny (France)--Church history.
Harvard subject headings:
Christian heresies--History--Middle Ages, 600-1500
Christianity and other religions
Christianity and other religions--Islam
Christianity and other religions--Judaism
Cluny (Benedictine abbey)--History.
Cluny (France)--Church history.
Heresy, Christian--France--Languedoc--History--Middle Ages, 600-1500.
Islam--Relations--Christianity
Judaism--Relations--Christianity
Peter, of Bruys, -1126.
Peter, the Venerable, approximately 1092-1156
Princeton subject headings: