Columbia subject headings:
Harvard subject headings:
Discipline--Religious aspects--Christianity--Congresses.
Europe--Social life and customs--Congresses.
Princeton subject headings:
Catholic Church--Discipline--History--Congresses.
Discipline--Religious aspects--Christianity--History--Congresses.
Europe--Moral conditions--Congresses.
Europe--Religious life and customs--Congresses.
Europe--Social conditions--Congresses.
Social control--History--Congresses.