Columbia subject headings:
Harvard subject headings:
Christianity and other religions--Islam
Europe--Civilization.
Islam--Europe--History.
Islam--Mediterranean Region--History.
Islam--Relations--Christianity
Islam--Spain--History
Mediterranean Region--History.
Spain--Civilization--Islamic influences.
Princeton subject headings:
Christianity and other religions--Islam.
Islam--Mediterranean Region--History.
Islam--Relations--Christianity.
Islam--Spain--History.
Spain--Civilization--Islamic influences.