Columbia subject headings:
Plebiscite--Poland--Pomerelia.
Plebiscite--Prussia, East (Poland and Russia)
Pomerelia (Poland)--History.
Prussia, East (Poland and Russia)--History.
World War, 1914-1918--Territorial questions--Poland--Pomerelia.
World War, 1914-1918--Territorial questions--Prussia, East (Poland and Russia)
Harvard subject headings:
Plebiscite--Poland--Pomerelia.
Plebiscite--Prussia, East (Poland and Russia)
Pomerelia (Poland)--History.
Prussia, East (Poland and Russia)--History.
World War, 1914-1918--Territorial questions--Poland--Pomerelia.
World War, 1914-1918--Territorial questions--Prussia, East (Poland and Russia)
Princeton subject headings: