Columbia subject headings:
Harvard subject headings:
Christian democratic parties--Germany--History.
Christlich-Demokratische Union Deutschlands--History.
Germany--Politics and government--20th century
Political parties--Germany--History.
Princeton subject headings:
Christian democratic parties--Germany--History.
Christlich-Demokratische Union Deutschlands--History.
Germany--Politics and government--20th century.
Political parties--Germany--History.