Columbia subject headings:
Christlich-Demokratische Union Deutschlands--History.
Germany (East)--Politics and government.
Germany (East). Ministerium für Staatssicherheit--History.
Harvard subject headings:
Christlich-Demokratische Union Deutschlands (Germany : East)--History.
Christlich-Demokratische Union Deutschlands--History.
Germany (East)--Politics and government.
Germany (East). Ministerium für Staatssicherheit--History.
Princeton subject headings:
Christlich-Demokratische Union Deutschlands--History.
Germany (East)--Politics and government.
Germany (East). Ministerium für Staatssicherheit--History.