Columbia subject headings:
Christianity and other religions--Islam.
Islam--Relations--Christianity.
Peter, the Venerable, approximately 1092-1156.
Harvard subject headings:
Christianity and other religions--Islam
Islam--Relations--Christianity
Peter, the Venerable, approximately 1092-1156
Princeton subject headings:
Christianity and other religions--Islam.
Islam--Relations--Christianity.
Peter, the Venerable, approximately 1092-1156.