Columbia subject headings:
Debts, External.
Euro.
European Union countries--Economic conditions.
European Union countries--Economic integration.
European Union--History.
European Union--Membership.
Financial crises.
Harvard subject headings:
Debts, External--European Union countries.
Euro.
European Economic Community.
European Union countries--Economic conditions.
European Union countries--Economic integration.
European Union countries--Economic policy.
Financial crises
Monetary policy--European Union countries.
Princeton subject headings: