Columbia subject headings:
Juvenile delinquency--Europe--Congresses.
Juvenile delinquency--France--Congresses.
Harvard subject headings:
Juvenile delinquency--Europe--History--Congresses.
Juvenile delinquency--France--History--Congresses.
Princeton subject headings:
Juvenile delinquency--Europe--Congresses.
Juvenile delinquency--France--Congresses.