Columbia subject headings:
Mecklenburg (Germany : Region)--History--Congresses.
Pomerania (Poland and Germany)--History--Congresses.
Harvard subject headings:
Mecklenburg (Germany : Region)--History--Congresses.
Pomerania (Poland and Germany)--History--Congresses.
Princeton subject headings:
Mecklenburg (Germany)--History--Congresses.
Pomerania (Poland and Germany)--History--Congresses.