Columbia subject headings:
Harvard subject headings:
Schaumburg (Germany : Landkreis)--Foreign relations--Congresses.
Schaumburg (Germany : Landkreis)--Intellectual life--Congresses.
Schaumburg (Germany : Landkreis)--Social life and customs--Congresses.
Schaumburg-Lippe (Germany)--Civilization--Congresses.
Schaumburg-Lippe (Germany)--History--Congresses.
Princeton subject headings:
Schaumburg (Germany)--Foreign relations--Congresses.
Schaumburg (Germany)--Intellectual life--Congresses.
Schaumburg (Germany)--Social life and customs--Congresses.