Columbia subject headings:
Communism--Poland.
Poland--History--1945-1980.
Political persecution--Poland.
Stalin, Joseph, 1878-1953.
Harvard subject headings:
Communism--Poland
Communism--Poland--History--20th century
Poland--History--1945-1980
Poland--Politics and government--1945-1980
Political persecution--Poland.
Stalin, Joseph, 1878-1953
Princeton subject headings:
Communism--Poland.
Poland--History--1945-1980.
Political persecution--Poland.
Stalin, Joseph, 1878-1953.