Columbia subject headings:
Adriatic Sea Region--Civilization.
Christianity and other religions--Islam.
Christianity and other religions--Judaism.
Islam--Relations--Christianity.
Judaism--Relations--Christianity.
Harvard subject headings:
Christianity and other religions--Islam
Christianity and other religions--Judaism
Islam--Relations--Christianity
Judaism--Relations--Christianity
Marche (Italy)--Civilization.
Marche (Italy)--Ethnic relations.
Princeton subject headings:
Adriatic Sea Region--Civilization.
Christianity and other religions--Islam.
Christianity and other religions--Judaism.
Islam--Relations--Christianity.
Judaism--Relations--Christianity.