Columbia subject headings:
Europe--Foreign relations--United States.
European Economic Community.
European Free Trade Association countries.
United States--Foreign relations--Europe.
Harvard subject headings:
Europe--Commerce--United States.
European Economic Community.
European Free Trade Association.
United States--Commerce--Europe.
Princeton subject headings:
Europe--Commerce--United States.
European Economic Community.
European Free Trade Association.
United States--Commerce--Europe.