Columbia subject headings:
Harvard subject headings:
Anti-communist movements--Poland--20th century.
Poland--Politics and government--1945-1980.
Student movements--Poland--History--20th century.
Student strikes--Poland--History--20th century.
Princeton subject headings:
Communism--Poland--History--20th century.
Poland--Social conditions--20th century.
Political activists--Poland--History--20th century.