Columbia subject headings:
Harvard subject headings:
Byzantine Empire--Foreign relations--Islamic Empire.
Christianity and other religions--Islam
Islam--Relations--Christianity
Islamic Empire--Foreign relations--Byzantine Empire.
John VI Cantacuzenus, Emperor of the East, 1292-1383
John VI Cantacuzenus, Emperor of the East, 1292-1383--Views on Islam.
Princeton subject headings:
Byzantine Empire--Foreign relations--Islamic Empire.
Christianity and other religions--Islam.
Islam--Relations--Christianity.
Islamic Empire--Foreign relations--Byzantine Empire.
John VI Cantacuzenus, Emperor of the East, 1292-1383--Religion.