Columbia subject headings:
Harvard subject headings:
Christlich-Demokratische Union Deutschlands (Germany : West)
Christlich-Soziale Union
Germany (West)
Germany (West). Bundestag
Opposition (Political science)
Princeton subject headings:
Bundestag, 1969-1973.
Christlich-Demokratische Union (Federal Republic)
Christlich-Soziale Union.
Germany (West)
Opposition (Political science)