Columbia subject headings:
Czechoslovakia--History--Intervention, 1968.
Czechoslovakia--Intellectual life--1945-1992.
Czechoslovakia--Politics and government--1968-1989.
Harvard subject headings:
Princeton subject headings:
Czechoslovakia--History--Intervention, 1968.
Czechoslovakia--Intellectual life--1945-1992.
Czechoslovakia--Politics and government--1968-1989.