Columbia subject headings:
Harvard subject headings:
Christianity and other religions--Islam
Europe--Relations--Islamic countries.
Islam--21st century
Islam--Essence, genius, nature
Islam--Relations--Christianity
Islamic countries--Relations--Europe.
Princeton subject headings:
Christianity and other religions--Islam.
Europe--Relations--Islamic countries.
Islam--21st century.
Islam--Essence, genius, nature.
Islam--Relations--Christianity.
Islamic countries--Relations--Europe.