Columbia subject headings:
Harvard subject headings:
Christian sociology--Catholic Church--Congresses.
Taxation--Law and legislation--Congresses
Wealth tax--Germany--Congresses.
Wealth--Religious aspects--Christianity--Congresses.
Princeton subject headings:
Christian sociology--Catholic Church--Congresses.
Taxation--Law and legislation--Congresses.
Wealth tax--Germany--Congresses.
Wealth--Religious aspects--Christianity--Congresses.