Columbia subject headings:
Harvard subject headings:
Czechoslovakia--Politics and government--1968-1989--Periodicals.
Hungary--Politics and government--1945-1989--Periodicals.
Poland--Politics and government--1945---Periodicals.
Princeton subject headings:
Czechoslovakia--Politics and government--1945-1992--Periodicals.
Hungary--Politics and government--1945---Periodicals.
Poland--Politics and government--1945---Periodicals.