Columbia subject headings:
Brandenburg (Germany : State)--Politics and government--Congresses.
Prussia (Germany)--Politics and government--Congresses.
Harvard subject headings:
Brandenburg (Germany : State)--Politics and government--Congresses.
Prussia (Germany)--Politics and government--Congresses.
Princeton subject headings:
Brandenburg (Electorate)--History--Congresses.
Brandenburg (Electorate)--Politics and government--Congresses.
Estates (Social orders)--Germany (East)--Brandenburg (Electorate)--History--Congresses.
Prussia (Germany)--History--Congresses.