Columbia subject headings:
Harvard subject headings:
Germany--Boundaries--Poland--History.
Plebiscite--Silesia, Upper (Poland and Czech Republic)--Bibliography.
Poland--Boundaries--Germany--History.
Silesia, Upper (Poland and Czech Republic)--History--Partition, 1919-1922--Historiography--Bibliography.
Princeton subject headings:
Germany--Boundaries--Poland--History.
Plebiscite--Silesia, Upper (Poland and Czech Republic)--Bibliography.
Poland--Boundaries--Germany--History.
Silesia, Upper (Poland and Czech Republic)--History--Partition, 1919-1922--Historiography--Bibliography.