Columbia subject headings:
Christianity and other religions--Islam.
Coptic Church--Relations--Islam.
Islam--Relations--Christianity.
Islam--Relations--Coptic Church.
Harvard subject headings:
Christianity and other religions--Islam
Coptic Church--Relations--Islam.
Islam--Relations--Christianity
Islam--Relations--Coptic Church
Princeton subject headings:
Christianity and other religions--Islam.
Coptic Church--Relations--Islam.
Islam--Relations--Christianity.
Islam--Relations--Coptic Church.