Columbia subject headings:
European Union countries--Foreign relations administration.
Treaties--Interpretation and construction.
Treaty-making power--European Union countries.
Harvard subject headings:
European Union countries--Foreign relations administration.
European Union--Foreign relations administration.
Treaties--Interpretation and construction
Treaty-making power--European Union countries.
Vienna Convention on the Law of Treaties
Vienna Convention on the Law of Treaties between States and International Organizations or between International Organizations
Princeton subject headings:
European Union--Foreign relations administration.
Treaties--Interpretation and construction.
Treaty-making power--European Union countries.
Vienna Convention on the Law of Treaties
Vienna Convention on the Law of Treaties between States and International Organizations or between International Organizations