Columbia subject headings:
Harvard subject headings:
Poverty--Congresses
Poverty--Prevention--Congresses.
Poverty--Prevention--Government policy--Congresses.
Social service--Congresses
Social work with children--Congresses.
Princeton subject headings:
Poverty--Congresses.
Poverty--Prevention--Congresses.
Poverty--Prevention--Government policy--Congresses.
Social service--Congresses.
Social work with children--Congresses.