Columbia subject headings:
Europe--Foreign relations--Islamic Empire.
Europe--Foreign relations--Islamic countries.
Islamic Empire--Foreign relations--Europe.
Islamic Empire--History.
Islamic Empire--Intellectual life.
Islamic countries--Foreign relations--Europe.
Harvard subject headings:
Europe--Foreign relations--Islamic Empire.
Europe--Foreign relations--Islamic countries.
Islamic Empire--Foreign relations--Europe.
Islamic Empire--History.
Islamic Empire--Intellectual life.
Islamic countries--Foreign relations--Europe.
Princeton subject headings: