Columbia subject headings:
Harvard subject headings:
Czechoslovakia--History--Intervention, 1968.
Czechoslovakia--Politics and government--1968-1989.
France--Politics and government--1945-
Germany (West)--Politics and government--1945-1990.
Princeton subject headings:
Czechoslovakia--History--Intervention, 1968.
France--Foreign relations--1958-1969.
Germany--Foreign relations--1945-