Columbia subject headings:
Equality--Congresses.
Social change--Congresses.
Social integration--Congresses.
Social policy--Congresses.
Harvard subject headings:
Equality--Congresses
Social change--Congresses
Social integration--Congresses.
Social policy--Congresses
Princeton subject headings:
Equality--Congresses.
Social change--Congresses.
Social integration--Congresses.
Social policy--Congresses.