Columbia subject headings:
Harvard subject headings:
Catholic Church--Italy, Northern--Congresses.
Christian sociology--Italy, Northern--Congresses.
Italy, Northern--Religion--20th century--Congresses.
Religion and sociology--Italy, Northern--Congresses.
Princeton subject headings:
Catholic Church--Italy, Northern--Congresses.
Italy, Northern--Civilization--Congresses.
Religion and culture--Italy, Northern--Congresses.
Secularization--Italy, Northern--Congresses.