Columbia subject headings:
Harvard subject headings:
Financial crises--History--21st century.
Financial crises--Political aspects.
Portugal--Economic conditions--21st century.
Portugal--Politics and government--21st century.
World politics--21st century
Princeton subject headings:
Financial crises--History--21st century.
Financial crises--Political aspects.
Portugal--Economic conditions--21st century.
Portugal--Politics and government--21st century.
World politics--21st century.