Columbia subject headings:
Harvard subject headings:
Child abuse--History--Congresses.
Child development--Congresses
Child welfare--History--Congresses.
Children--Social conditions--Congresses.
Education--History--Congresses.
Social change--Congresses
Youth development--Congresses.
Youth--Social conditions--Congresses.
Princeton subject headings:
Child abuse--History--Congresses.
Child development--Congresses.
Child welfare--History--Congresses.
Children--Social conditions--Congresses.
Education--History--Congresses.
Social change--Congresses.
Youth development--Congresses.
Youth--Social conditions--Congresses.