Columbia subject headings:
Harvard subject headings:
Diplomacy.
International agencies--Germany--History.
International cooperation--Societies, etc.--History.
Tönissteiner Kreis (Berlin, Germany)--Anniversaries, etc.
Tönissteiner Kreis (Berlin, Germany)--History.
Youth--Political activity--Germany
Princeton subject headings:
Diplomacy.
International agencies--Germany--History.
International cooperation--Societies, etc.--History.
Tönissteiner Kreis--Anniversaries, etc.
Tönissteiner Kreis--History.
Youth--Political activity--Germany.