Columbia subject headings:
Silesia, Lower (Poland and Germany)--History.
Silesia, Lower (Poland and Germany)--Politics and government.
Harvard subject headings:
Germany--Relations--Poland.
Nationalism--Silesia, Lower (Poland and Germany)--History.
Poland--Relations--Germany
Silesia, Lower (Poland and Germany)--Ethnic relations.
Princeton subject headings:
Germany--Relations--Poland.
Nationalism--Silesia, Lower (Poland and Germany)--History.
Poland--Relations--Germany.
Silesia, Lower (Poland and Germany)--Ethnic relations.