Columbia subject headings:
Czechoslovakia--Politics and government--1968-1989.
Czechoslovakia--Social conditions--1945-1992.
World politics--20th century.
Harvard subject headings:
Czechoslovakia--Politics and government--1968-1989.
Czechoslovakia--Social conditions--1945-
Czechoslovakia--Social conditions--1945-1992.
World politics--20th century
Princeton subject headings:
Czechoslovakia--Politics and government--1968-1989.
Czechoslovakia--Social conditions--1945-1992.
World politics--20th century.