Columbia subject headings:
Kaszuby (Poland)--History--19th century--Congresses.
Kaszuby (Poland)--History--20th century--Congresses.
Pomerania (Poland and Germany)--History--19th century--Congresses.
Pomerania (Poland and Germany)--History--20th century--Congresses.
Harvard subject headings:
Historians--Poland--Kaszuby--Congresses.
Historians--Pomerania (Poland and Germany)--Congresses.
Kaszuby (Poland)--Antiquities.
Kaszuby (Poland)--Civilization--Congresses.
Pomerania (Poland and Germany)--Antiquities--Congresses.
Pomerania (Poland and Germany)--Civilization--Congresses.
Princeton subject headings:
Kaszuby (Poland)--History--Congresses.
Pomerelia (Poland)--History--Congresses.