Columbia subject headings:
Juvenile delinquency--Congresses.
Reformatories--Congresses.
Harvard subject headings:
European Exchange Plan Seminar on the Institutional Treatment of Juvenile Offenders (1954 : Vienna)
European Exchange Plan Seminar on the Institutional Treatment of Juvenile Offenders (1954 : Vienna, Austria)
Juvenile delinquency--Congresses
Reformatories--Congresses.
Princeton subject headings: