Columbia subject headings:
Anti-communist movements--Silesia, Upper (Poland and Czech Republic)--Congresses.
Communism--Silesia, Upper (Poland and Czech Republic)--Congresses.
Silesia, Upper (Poland and Czech Republic)--History--20th century--Congresses.
Harvard subject headings:
Anti-communist movements--Silesia, Upper (Poland and Czech Republic)--Congresses.
Communism--Silesia, Upper (Poland and Czech Republic)--Congresses.
Silesia, Upper (Poland and Czech Republic)--History--20th century--Congresses.
Princeton subject headings:
Poland--History--Uprising, 1956--Congresses.
Silesia, Upper (Poland and Czech Republic)--History--Congresses.
Stalin, Joseph, 1878-1953--Congresses.