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