Columbia subject headings:
Harvard subject headings:
Consumer protection--Portugal--History--20th century.
Consumers--Portugal--History--20th century.
Consumption (Economics)--Social aspects--Portugal--History--20th century.
Princeton subject headings:
Consumer protection--Portugal--History--20th century.
Consumers--Portugal--History--20th century.
Consumption (Economics)--Social aspects--Portugal--History--20th century.