Columbia subject headings:
Charity--Congresses.
Church and social problems--Catholic Church--Congresses.
Social justice--Congresses.
Harvard subject headings:
Charity--Congresses.
Church and social problems--Catholic Church--Congresses
Social justice--Congresses
Princeton subject headings:
Charity--Congresses.
Church and social problems--Catholic Church--Congresses.
Social justice--Congresses.