Columbia subject headings:
Harvard subject headings:
Christlich-Demokratische Union Deutschlands
Christlich-Soziale Union.
Europe--Foreign relations--Germany.
European Union
Germany--Foreign relations--1945-
Germany--Foreign relations--Europe.
Princeton subject headings:
Christlich-Demokratische Union Deutschlands.
Christlich-Soziale Union.
Europe--Foreign relations--Germany.
European Union.
Germany--Foreign relations--1945-
Germany--Foreign relations--Europe.