Columbia subject headings:
Radio broadcasting--Germany.
Television broadcasting--Germany.
Harvard subject headings:
Radio broadcasting--Germany--History--Sources.
Radio programs--Germany--History--Sources.
Television broadcasting--Germany--History--Sources.
Television programs--Germany--History--Sources.
Princeton subject headings:
Radio broadcasting--Germany--History--Sources.
Radio programs--Germany--History--Sources.
Television broadcasting--Germany--History--Sources.
Television programs--Germany--History--Sources.