Columbia subject headings:
Elections--Germany--Heidelberg.
Elections--Germany--Mannheim.
Germany (West). Bundestag (6th : 1969-1973)--Elections.
Harvard subject headings:
Elections--Germany--Heidelberg.
Elections--Germany--Mannheim.
Germany (West). Bundestag--Elections, 1969.
Princeton subject headings:
Elections--Germany--Heidelberg.
Elections--Germany--Mannheim.
Germany (West). 6. Bundestag, 1969-1973--Elections.