Columbia subject headings:
Crime prevention--Congresses.
Juvenile delinquency--Germany--Prevention--Congresses.
Juvenile delinquency--Prevention--Congresses.
Violence in children--Congresses.
Youth and violence--Congresses.
Harvard subject headings:
Crime prevention--Congresses
Juvenile delinquency--Germany--Prevention--Congresses.
Juvenile delinquency--Prevention--Congresses.
Violence in children--Congresses.
Youth and violence--Congresses.
Princeton subject headings: