Columbia subject headings:
Europe--Politics and government--20th century.
France--Foreign relations--Poland.
Poland--Foreign relations--France.
Silesia, Upper (Poland and Czech Republic)--History.
Harvard subject headings:
Europe--Politics and government--20th century.
France--Foreign relations--Poland.
Poland--Foreign relations--France.
Silesia, Upper (Poland and Czech Republic)--History.
Princeton subject headings:
Europe--Politics and government--20th century.
France--Foreign relations--Poland.
Poland--Foreign relations--France.
Silesia, Upper (Poland and Czech Republic)--History.