Columbia subject headings:
Harvard subject headings:
Child welfare--Portugal--History--20th century.
Children--Portugal--History--20th century.
Juvenile delinquency--Portugal--History--20th century.
Portugal--Social policy.
Princeton subject headings:
Child welfare--Portugal--History--20th century.
Children--Portugal--History--20th century.
Juvenile delinquency--Portugal--History--20th century.